Home / 15,326.99-21,151.35-8,612.63

Finding the Fourth Proportional to 15,326.99, 21,151.35 and 8,612.63

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Solution

The fourth proportional to 15,326.99, 21,151.35 and 8,612.63 is: 11,885.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.99 : 21,151.35 = 8,612.63 : x
  2. Step 2: Convert to fraction form
    15,326.99/21,151.35 = 8,612.63/x
  3. Step 3: Cross multiply
    15,326.99x = 21,151.35 × 8,612.63
  4. Step 4: Simplify right side
    15,326.99x = 182,168,645.79
  5. Step 5: Solve for x
    x = 182,168,645.79/15,326.99
  6. Step 6: Final answer
    x = 11,885.48

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Double scale
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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.