Home / 20,430.24-30,593.28-18,719.52

Finding the Fourth Proportional to 20,430.24, 30,593.28 and 18,719.52

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Solution

The fourth proportional to 20,430.24, 30,593.28 and 18,719.52 is: 28,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.24 : 30,593.28 = 18,719.52 : x
  2. Step 2: Convert to fraction form
    20,430.24/30,593.28 = 18,719.52/x
  3. Step 3: Cross multiply
    20,430.24x = 30,593.28 × 18,719.52
  4. Step 4: Simplify right side
    20,430.24x = 572,691,516.83
  5. Step 5: Solve for x
    x = 572,691,516.83/20,430.24
  6. Step 6: Final answer
    x = 28,031.56

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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.