Home / 34,215.12-47,221.56-20,072.52

Finding the Fourth Proportional to 34,215.12, 47,221.56 and 20,072.52

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Solution

The fourth proportional to 34,215.12, 47,221.56 and 20,072.52 is: 27,702.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,215.12 : 47,221.56 = 20,072.52 : x
  2. Step 2: Convert to fraction form
    34,215.12/47,221.56 = 20,072.52/x
  3. Step 3: Cross multiply
    34,215.12x = 47,221.56 × 20,072.52
  4. Step 4: Simplify right side
    34,215.12x = 947,855,707.53
  5. Step 5: Solve for x
    x = 947,855,707.53/34,215.12
  6. Step 6: Final answer
    x = 27,702.83

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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.