Home / 31,687-47,531.18-11,974.84

Finding the Fourth Proportional to 31,687, 47,531.18 and 11,974.84

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Solution

The fourth proportional to 31,687, 47,531.18 and 11,974.84 is: 17,962.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687 : 47,531.18 = 11,974.84 : x
  2. Step 2: Convert to fraction form
    31,687/47,531.18 = 11,974.84/x
  3. Step 3: Cross multiply
    31,687x = 47,531.18 × 11,974.84
  4. Step 4: Simplify right side
    31,687x = 569,178,275.51
  5. Step 5: Solve for x
    x = 569,178,275.51/31,687
  6. Step 6: Final answer
    x = 17,962.52

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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.