Home / 30,125.62-45,139.02-21,344.86

Finding the Fourth Proportional to 30,125.62, 45,139.02 and 21,344.86

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Solution

The fourth proportional to 30,125.62, 45,139.02 and 21,344.86 is: 31,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,125.62 : 45,139.02 = 21,344.86 : x
  2. Step 2: Convert to fraction form
    30,125.62/45,139.02 = 21,344.86/x
  3. Step 3: Cross multiply
    30,125.62x = 45,139.02 × 21,344.86
  4. Step 4: Simplify right side
    30,125.62x = 963,486,062.44
  5. Step 5: Solve for x
    x = 963,486,062.44/30,125.62
  6. Step 6: Final answer
    x = 31,982.28

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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.