Home / 31,331.60-47,001.80-9,146.61

Finding the Fourth Proportional to 31,331.60, 47,001.80 and 9,146.61

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Solution

The fourth proportional to 31,331.60, 47,001.80 and 9,146.61 is: 13,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.60 : 47,001.80 = 9,146.61 : x
  2. Step 2: Convert to fraction form
    31,331.60/47,001.80 = 9,146.61/x
  3. Step 3: Cross multiply
    31,331.60x = 47,001.80 × 9,146.61
  4. Step 4: Simplify right side
    31,331.60x = 429,907,088.16
  5. Step 5: Solve for x
    x = 429,907,088.16/31,331.60
  6. Step 6: Final answer
    x = 13,721.20

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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.