Home / 30,613.92-45,933.12-13,981.80

Finding the Fourth Proportional to 30,613.92, 45,933.12 and 13,981.80

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Solution

The fourth proportional to 30,613.92, 45,933.12 and 13,981.80 is: 20,978.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,613.92 : 45,933.12 = 13,981.80 : x
  2. Step 2: Convert to fraction form
    30,613.92/45,933.12 = 13,981.80/x
  3. Step 3: Cross multiply
    30,613.92x = 45,933.12 × 13,981.80
  4. Step 4: Simplify right side
    30,613.92x = 642,227,697.22
  5. Step 5: Solve for x
    x = 642,227,697.22/30,613.92
  6. Step 6: Final answer
    x = 20,978.29

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1.5x scale

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.