Home / 11,153.55-15,389.17-6,437.82

Finding the Fourth Proportional to 11,153.55, 15,389.17 and 6,437.82

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Solution

The fourth proportional to 11,153.55, 15,389.17 and 6,437.82 is: 8,882.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.55 : 15,389.17 = 6,437.82 : x
  2. Step 2: Convert to fraction form
    11,153.55/15,389.17 = 6,437.82/x
  3. Step 3: Cross multiply
    11,153.55x = 15,389.17 × 6,437.82
  4. Step 4: Simplify right side
    11,153.55x = 99,072,706.41
  5. Step 5: Solve for x
    x = 99,072,706.41/11,153.55
  6. Step 6: Final answer
    x = 8,882.62

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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.