Home / 15,331.69-21,159.49-8,526.39

Finding the Fourth Proportional to 15,331.69, 21,159.49 and 8,526.39

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Solution

The fourth proportional to 15,331.69, 21,159.49 and 8,526.39 is: 11,767.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.69 : 21,159.49 = 8,526.39 : x
  2. Step 2: Convert to fraction form
    15,331.69/21,159.49 = 8,526.39/x
  3. Step 3: Cross multiply
    15,331.69x = 21,159.49 × 8,526.39
  4. Step 4: Simplify right side
    15,331.69x = 180,414,021.31
  5. Step 5: Solve for x
    x = 180,414,021.31/15,331.69
  6. Step 6: Final answer
    x = 11,767.39

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Half scale
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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.