Home / 15,499.56-21,389.43-8,425.97

Finding the Fourth Proportional to 15,499.56, 21,389.43 and 8,425.97

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Solution

The fourth proportional to 15,499.56, 21,389.43 and 8,425.97 is: 11,627.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.56 : 21,389.43 = 8,425.97 : x
  2. Step 2: Convert to fraction form
    15,499.56/21,389.43 = 8,425.97/x
  3. Step 3: Cross multiply
    15,499.56x = 21,389.43 × 8,425.97
  4. Step 4: Simplify right side
    15,499.56x = 180,226,588.55
  5. Step 5: Solve for x
    x = 180,226,588.55/15,499.56
  6. Step 6: Final answer
    x = 11,627.85

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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.