Home / 34,149.93-47,118.88-20,720.87

Finding the Fourth Proportional to 34,149.93, 47,118.88 and 20,720.87

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Solution

The fourth proportional to 34,149.93, 47,118.88 and 20,720.87 is: 28,589.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,149.93 : 47,118.88 = 20,720.87 : x
  2. Step 2: Convert to fraction form
    34,149.93/47,118.88 = 20,720.87/x
  3. Step 3: Cross multiply
    34,149.93x = 47,118.88 × 20,720.87
  4. Step 4: Simplify right side
    34,149.93x = 976,344,187.03
  5. Step 5: Solve for x
    x = 976,344,187.03/34,149.93
  6. Step 6: Final answer
    x = 28,589.93

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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.