Home / 28,199.39-38,915.16-16,869.36

Finding the Fourth Proportional to 28,199.39, 38,915.16 and 16,869.36

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Solution

The fourth proportional to 28,199.39, 38,915.16 and 16,869.36 is: 23,279.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.39 : 38,915.16 = 16,869.36 : x
  2. Step 2: Convert to fraction form
    28,199.39/38,915.16 = 16,869.36/x
  3. Step 3: Cross multiply
    28,199.39x = 38,915.16 × 16,869.36
  4. Step 4: Simplify right side
    28,199.39x = 656,473,973.61
  5. Step 5: Solve for x
    x = 656,473,973.61/28,199.39
  6. Step 6: Final answer
    x = 23,279.72

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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.