Home / 55,005.28-82,508.16-19,931.20

Finding the Fourth Proportional to 55,005.28, 82,508.16 and 19,931.20

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Solution

The fourth proportional to 55,005.28, 82,508.16 and 19,931.20 is: 29,896.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,005.28 : 82,508.16 = 19,931.20 : x
  2. Step 2: Convert to fraction form
    55,005.28/82,508.16 = 19,931.20/x
  3. Step 3: Cross multiply
    55,005.28x = 82,508.16 × 19,931.20
  4. Step 4: Simplify right side
    55,005.28x = 1,644,486,638.59
  5. Step 5: Solve for x
    x = 1,644,486,638.59/55,005.28
  6. Step 6: Final answer
    x = 29,896.89

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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.