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Finding the Fourth Proportional to 14,988.71, 20,685.57 and 8,275.63

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Solution

The fourth proportional to 14,988.71, 20,685.57 and 8,275.63 is: 11,421.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,988.71 : 20,685.57 = 8,275.63 : x
  2. Step 2: Convert to fraction form
    14,988.71/20,685.57 = 8,275.63/x
  3. Step 3: Cross multiply
    14,988.71x = 20,685.57 × 8,275.63
  4. Step 4: Simplify right side
    14,988.71x = 171,186,123.66
  5. Step 5: Solve for x
    x = 171,186,123.66/14,988.71
  6. Step 6: Final answer
    x = 11,421.00

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Double scale
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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.