Home / 28,156.47-38,820.65-18,067.11

Finding the Fourth Proportional to 28,156.47, 38,820.65 and 18,067.11

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Solution

The fourth proportional to 28,156.47, 38,820.65 and 18,067.11 is: 24,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.47 : 38,820.65 = 18,067.11 : x
  2. Step 2: Convert to fraction form
    28,156.47/38,820.65 = 18,067.11/x
  3. Step 3: Cross multiply
    28,156.47x = 38,820.65 × 18,067.11
  4. Step 4: Simplify right side
    28,156.47x = 701,376,863.49
  5. Step 5: Solve for x
    x = 701,376,863.49/28,156.47
  6. Step 6: Final answer
    x = 24,909.97

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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.