Home / 10,909.64-16,368.51-5,711.87

Finding the Fourth Proportional to 10,909.64, 16,368.51 and 5,711.87

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Solution

The fourth proportional to 10,909.64, 16,368.51 and 5,711.87 is: 8,569.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.64 : 16,368.51 = 5,711.87 : x
  2. Step 2: Convert to fraction form
    10,909.64/16,368.51 = 5,711.87/x
  3. Step 3: Cross multiply
    10,909.64x = 16,368.51 × 5,711.87
  4. Step 4: Simplify right side
    10,909.64x = 93,494,801.21
  5. Step 5: Solve for x
    x = 93,494,801.21/10,909.64
  6. Step 6: Final answer
    x = 8,569.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.