Home / 20,730.97-31,105.56-7,585.30

Finding the Fourth Proportional to 20,730.97, 31,105.56 and 7,585.30

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Solution

The fourth proportional to 20,730.97, 31,105.56 and 7,585.30 is: 11,381.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.97 : 31,105.56 = 7,585.30 : x
  2. Step 2: Convert to fraction form
    20,730.97/31,105.56 = 7,585.30/x
  3. Step 3: Cross multiply
    20,730.97x = 31,105.56 × 7,585.30
  4. Step 4: Simplify right side
    20,730.97x = 235,944,848.74
  5. Step 5: Solve for x
    x = 235,944,848.74/20,730.97
  6. Step 6: Final answer
    x = 11,381.28

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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.