Home / 28,203.13-38,899.62-20,253.52

Finding the Fourth Proportional to 28,203.13, 38,899.62 and 20,253.52

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Solution

The fourth proportional to 28,203.13, 38,899.62 and 20,253.52 is: 27,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.13 : 38,899.62 = 20,253.52 : x
  2. Step 2: Convert to fraction form
    28,203.13/38,899.62 = 20,253.52/x
  3. Step 3: Cross multiply
    28,203.13x = 38,899.62 × 20,253.52
  4. Step 4: Simplify right side
    28,203.13x = 787,854,231.66
  5. Step 5: Solve for x
    x = 787,854,231.66/28,203.13
  6. Step 6: Final answer
    x = 27,934.99

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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.