Home / 10,689.18-14,752.44-6,215.28

Finding the Fourth Proportional to 10,689.18, 14,752.44 and 6,215.28

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Solution

The fourth proportional to 10,689.18, 14,752.44 and 6,215.28 is: 8,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,689.18 : 14,752.44 = 6,215.28 : x
  2. Step 2: Convert to fraction form
    10,689.18/14,752.44 = 6,215.28/x
  3. Step 3: Cross multiply
    10,689.18x = 14,752.44 × 6,215.28
  4. Step 4: Simplify right side
    10,689.18x = 91,690,545.28
  5. Step 5: Solve for x
    x = 91,690,545.28/10,689.18
  6. Step 6: Final answer
    x = 8,577.88

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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.