Home / 20,753.28-31,111.20-7,596.36

Finding the Fourth Proportional to 20,753.28, 31,111.20 and 7,596.36

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Solution

The fourth proportional to 20,753.28, 31,111.20 and 7,596.36 is: 11,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.28 : 31,111.20 = 7,596.36 : x
  2. Step 2: Convert to fraction form
    20,753.28/31,111.20 = 7,596.36/x
  3. Step 3: Cross multiply
    20,753.28x = 31,111.20 × 7,596.36
  4. Step 4: Simplify right side
    20,753.28x = 236,331,875.23
  5. Step 5: Solve for x
    x = 236,331,875.23/20,753.28
  6. Step 6: Final answer
    x = 11,387.69

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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.