Home / 30,172.55-45,220.52-13,531.91

Finding the Fourth Proportional to 30,172.55, 45,220.52 and 13,531.91

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Solution

The fourth proportional to 30,172.55, 45,220.52 and 13,531.91 is: 20,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.55 : 45,220.52 = 13,531.91 : x
  2. Step 2: Convert to fraction form
    30,172.55/45,220.52 = 13,531.91/x
  3. Step 3: Cross multiply
    30,172.55x = 45,220.52 × 13,531.91
  4. Step 4: Simplify right side
    30,172.55x = 611,919,713.03
  5. Step 5: Solve for x
    x = 611,919,713.03/30,172.55
  6. Step 6: Final answer
    x = 20,280.68

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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.