Home / 14,612.71-20,160.61-8,320.63

Finding the Fourth Proportional to 14,612.71, 20,160.61 and 8,320.63

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Solution

The fourth proportional to 14,612.71, 20,160.61 and 8,320.63 is: 11,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.71 : 20,160.61 = 8,320.63 : x
  2. Step 2: Convert to fraction form
    14,612.71/20,160.61 = 8,320.63/x
  3. Step 3: Cross multiply
    14,612.71x = 20,160.61 × 8,320.63
  4. Step 4: Simplify right side
    14,612.71x = 167,748,976.38
  5. Step 5: Solve for x
    x = 167,748,976.38/14,612.71
  6. Step 6: Final answer
    x = 11,479.66

Related Problems

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Half scale
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Double scale
Find fourth proportional to 14,613.71, 20,161.99 and 8,321.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.