Home / 31,099.10-42,915.21-17,668.58

Finding the Fourth Proportional to 31,099.10, 42,915.21 and 17,668.58

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Solution

The fourth proportional to 31,099.10, 42,915.21 and 17,668.58 is: 24,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,099.10 : 42,915.21 = 17,668.58 : x
  2. Step 2: Convert to fraction form
    31,099.10/42,915.21 = 17,668.58/x
  3. Step 3: Cross multiply
    31,099.10x = 42,915.21 × 17,668.58
  4. Step 4: Simplify right side
    31,099.10x = 758,251,010.03
  5. Step 5: Solve for x
    x = 758,251,010.03/31,099.10
  6. Step 6: Final answer
    x = 24,381.76

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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.