Home / 23,129.60-31,918.76-12,519.40

Finding the Fourth Proportional to 23,129.60, 31,918.76 and 12,519.40

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Solution

The fourth proportional to 23,129.60, 31,918.76 and 12,519.40 is: 17,276.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.60 : 31,918.76 = 12,519.40 : x
  2. Step 2: Convert to fraction form
    23,129.60/31,918.76 = 12,519.40/x
  3. Step 3: Cross multiply
    23,129.60x = 31,918.76 × 12,519.40
  4. Step 4: Simplify right side
    23,129.60x = 399,603,723.94
  5. Step 5: Solve for x
    x = 399,603,723.94/23,129.60
  6. Step 6: Final answer
    x = 17,276.72

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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.