Home / 20,207.89-30,312.65-10,344.52

Finding the Fourth Proportional to 20,207.89, 30,312.65 and 10,344.52

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Solution

The fourth proportional to 20,207.89, 30,312.65 and 10,344.52 is: 15,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.89 : 30,312.65 = 10,344.52 : x
  2. Step 2: Convert to fraction form
    20,207.89/30,312.65 = 10,344.52/x
  3. Step 3: Cross multiply
    20,207.89x = 30,312.65 × 10,344.52
  4. Step 4: Simplify right side
    20,207.89x = 313,569,814.18
  5. Step 5: Solve for x
    x = 313,569,814.18/20,207.89
  6. Step 6: Final answer
    x = 15,517.20

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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.