Home / 23,129.80-31,919.19-12,519.47

Finding the Fourth Proportional to 23,129.80, 31,919.19 and 12,519.47

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Solution

The fourth proportional to 23,129.80, 31,919.19 and 12,519.47 is: 17,276.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.80 : 31,919.19 = 12,519.47 : x
  2. Step 2: Convert to fraction form
    23,129.80/31,919.19 = 12,519.47/x
  3. Step 3: Cross multiply
    23,129.80x = 31,919.19 × 12,519.47
  4. Step 4: Simplify right side
    23,129.80x = 399,611,341.63
  5. Step 5: Solve for x
    x = 399,611,341.63/23,129.80
  6. Step 6: Final answer
    x = 17,276.90

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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.