Home / 15,306.18-21,125.43-9,343.14

Finding the Fourth Proportional to 15,306.18, 21,125.43 and 9,343.14

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Solution

The fourth proportional to 15,306.18, 21,125.43 and 9,343.14 is: 12,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.18 : 21,125.43 = 9,343.14 : x
  2. Step 2: Convert to fraction form
    15,306.18/21,125.43 = 9,343.14/x
  3. Step 3: Cross multiply
    15,306.18x = 21,125.43 × 9,343.14
  4. Step 4: Simplify right side
    15,306.18x = 197,377,850.05
  5. Step 5: Solve for x
    x = 197,377,850.05/15,306.18
  6. Step 6: Final answer
    x = 12,895.30

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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.