Home / 31,778.08-47,667.12-10,990.24

Finding the Fourth Proportional to 31,778.08, 47,667.12 and 10,990.24

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Solution

The fourth proportional to 31,778.08, 47,667.12 and 10,990.24 is: 16,485.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778.08 : 47,667.12 = 10,990.24 : x
  2. Step 2: Convert to fraction form
    31,778.08/47,667.12 = 10,990.24/x
  3. Step 3: Cross multiply
    31,778.08x = 47,667.12 × 10,990.24
  4. Step 4: Simplify right side
    31,778.08x = 523,873,088.91
  5. Step 5: Solve for x
    x = 523,873,088.91/31,778.08
  6. Step 6: Final answer
    x = 16,485.36

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Double scale
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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.