Home / 31,129.85-42,962.87-17,703.12

Finding the Fourth Proportional to 31,129.85, 42,962.87 and 17,703.12

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Solution

The fourth proportional to 31,129.85, 42,962.87 and 17,703.12 is: 24,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.85 : 42,962.87 = 17,703.12 : x
  2. Step 2: Convert to fraction form
    31,129.85/42,962.87 = 17,703.12/x
  3. Step 3: Cross multiply
    31,129.85x = 42,962.87 × 17,703.12
  4. Step 4: Simplify right side
    31,129.85x = 760,576,843.15
  5. Step 5: Solve for x
    x = 760,576,843.15/31,129.85
  6. Step 6: Final answer
    x = 24,432.40

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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.