Home / 15,499.50-21,389.26-8,425.87

Finding the Fourth Proportional to 15,499.50, 21,389.26 and 8,425.87

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Solution

The fourth proportional to 15,499.50, 21,389.26 and 8,425.87 is: 11,627.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.50 : 21,389.26 = 8,425.87 : x
  2. Step 2: Convert to fraction form
    15,499.50/21,389.26 = 8,425.87/x
  3. Step 3: Cross multiply
    15,499.50x = 21,389.26 × 8,425.87
  4. Step 4: Simplify right side
    15,499.50x = 180,223,156.56
  5. Step 5: Solve for x
    x = 180,223,156.56/15,499.50
  6. Step 6: Final answer
    x = 11,627.68

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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.