Home / 38,142.13-57,199.15-13,175.77

Finding the Fourth Proportional to 38,142.13, 57,199.15 and 13,175.77

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Solution

The fourth proportional to 38,142.13, 57,199.15 and 13,175.77 is: 19,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.13 : 57,199.15 = 13,175.77 : x
  2. Step 2: Convert to fraction form
    38,142.13/57,199.15 = 13,175.77/x
  3. Step 3: Cross multiply
    38,142.13x = 57,199.15 × 13,175.77
  4. Step 4: Simplify right side
    38,142.13x = 753,642,844.60
  5. Step 5: Solve for x
    x = 753,642,844.60/38,142.13
  6. Step 6: Final answer
    x = 19,758.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.