Home / 28,170.27-38,874.65-15,423.30

Finding the Fourth Proportional to 28,170.27, 38,874.65 and 15,423.30

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Solution

The fourth proportional to 28,170.27, 38,874.65 and 15,423.30 is: 21,283.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.27 : 38,874.65 = 15,423.30 : x
  2. Step 2: Convert to fraction form
    28,170.27/38,874.65 = 15,423.30/x
  3. Step 3: Cross multiply
    28,170.27x = 38,874.65 × 15,423.30
  4. Step 4: Simplify right side
    28,170.27x = 599,575,312.23
  5. Step 5: Solve for x
    x = 599,575,312.23/28,170.27
  6. Step 6: Final answer
    x = 21,283.97

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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.