Home / 10,920.56-16,377.08-3,127.28

Finding the Fourth Proportional to 10,920.56, 16,377.08 and 3,127.28

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Solution

The fourth proportional to 10,920.56, 16,377.08 and 3,127.28 is: 4,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.56 : 16,377.08 = 3,127.28 : x
  2. Step 2: Convert to fraction form
    10,920.56/16,377.08 = 3,127.28/x
  3. Step 3: Cross multiply
    10,920.56x = 16,377.08 × 3,127.28
  4. Step 4: Simplify right side
    10,920.56x = 51,215,714.74
  5. Step 5: Solve for x
    x = 51,215,714.74/10,920.56
  6. Step 6: Final answer
    x = 4,689.84

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1.5x scale

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.