Home / 34,149.12-47,129.60-20,013.92

Finding the Fourth Proportional to 34,149.12, 47,129.60 and 20,013.92

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Solution

The fourth proportional to 34,149.12, 47,129.60 and 20,013.92 is: 27,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,149.12 : 47,129.60 = 20,013.92 : x
  2. Step 2: Convert to fraction form
    34,149.12/47,129.60 = 20,013.92/x
  3. Step 3: Cross multiply
    34,149.12x = 47,129.60 × 20,013.92
  4. Step 4: Simplify right side
    34,149.12x = 943,248,044.03
  5. Step 5: Solve for x
    x = 943,248,044.03/34,149.12
  6. Step 6: Final answer
    x = 27,621.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.