Home / 31,358.72-47,038.08-7,984.28

Finding the Fourth Proportional to 31,358.72, 47,038.08 and 7,984.28

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Solution

The fourth proportional to 31,358.72, 47,038.08 and 7,984.28 is: 11,976.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,358.72 : 47,038.08 = 7,984.28 : x
  2. Step 2: Convert to fraction form
    31,358.72/47,038.08 = 7,984.28/x
  3. Step 3: Cross multiply
    31,358.72x = 47,038.08 × 7,984.28
  4. Step 4: Simplify right side
    31,358.72x = 375,565,201.38
  5. Step 5: Solve for x
    x = 375,565,201.38/31,358.72
  6. Step 6: Final answer
    x = 11,976.42

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Similar ratio
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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.