Home / 31,424.90-43,353.99-17,988.91

Finding the Fourth Proportional to 31,424.90, 43,353.99 and 17,988.91

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Solution

The fourth proportional to 31,424.90, 43,353.99 and 17,988.91 is: 24,817.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424.90 : 43,353.99 = 17,988.91 : x
  2. Step 2: Convert to fraction form
    31,424.90/43,353.99 = 17,988.91/x
  3. Step 3: Cross multiply
    31,424.90x = 43,353.99 × 17,988.91
  4. Step 4: Simplify right side
    31,424.90x = 779,890,915.87
  5. Step 5: Solve for x
    x = 779,890,915.87/31,424.90
  6. Step 6: Final answer
    x = 24,817.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.