Home / 20,746.68-31,102.56-9,647.70

Finding the Fourth Proportional to 20,746.68, 31,102.56 and 9,647.70

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Solution

The fourth proportional to 20,746.68, 31,102.56 and 9,647.70 is: 14,463.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.68 : 31,102.56 = 9,647.70 : x
  2. Step 2: Convert to fraction form
    20,746.68/31,102.56 = 9,647.70/x
  3. Step 3: Cross multiply
    20,746.68x = 31,102.56 × 9,647.70
  4. Step 4: Simplify right side
    20,746.68x = 300,068,168.11
  5. Step 5: Solve for x
    x = 300,068,168.11/20,746.68
  6. Step 6: Final answer
    x = 14,463.43

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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.