Home / 15,709.62-21,669.66-9,331.88

Finding the Fourth Proportional to 15,709.62, 21,669.66 and 9,331.88

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Solution

The fourth proportional to 15,709.62, 21,669.66 and 9,331.88 is: 12,872.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.62 : 21,669.66 = 9,331.88 : x
  2. Step 2: Convert to fraction form
    15,709.62/21,669.66 = 9,331.88/x
  3. Step 3: Cross multiply
    15,709.62x = 21,669.66 × 9,331.88
  4. Step 4: Simplify right side
    15,709.62x = 202,218,666.76
  5. Step 5: Solve for x
    x = 202,218,666.76/15,709.62
  6. Step 6: Final answer
    x = 12,872.28

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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.