Home / 28,312.12-42,423.90-17,902

Finding the Fourth Proportional to 28,312.12, 42,423.90 and 17,902

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Solution

The fourth proportional to 28,312.12, 42,423.90 and 17,902 is: 26,825.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.12 : 42,423.90 = 17,902 : x
  2. Step 2: Convert to fraction form
    28,312.12/42,423.90 = 17,902/x
  3. Step 3: Cross multiply
    28,312.12x = 42,423.90 × 17,902
  4. Step 4: Simplify right side
    28,312.12x = 759,472,657.80
  5. Step 5: Solve for x
    x = 759,472,657.80/28,312.12
  6. Step 6: Final answer
    x = 26,825.00

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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.