Home / 10,787.91-14,890.11-9,666.93

Finding the Fourth Proportional to 10,787.91, 14,890.11 and 9,666.93

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Solution

The fourth proportional to 10,787.91, 14,890.11 and 9,666.93 is: 13,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.91 : 14,890.11 = 9,666.93 : x
  2. Step 2: Convert to fraction form
    10,787.91/14,890.11 = 9,666.93/x
  3. Step 3: Cross multiply
    10,787.91x = 14,890.11 × 9,666.93
  4. Step 4: Simplify right side
    10,787.91x = 143,941,651.06
  5. Step 5: Solve for x
    x = 143,941,651.06/10,787.91
  6. Step 6: Final answer
    x = 13,342.87

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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.