Home / 28,151.22-42,214.40-15,000.78

Finding the Fourth Proportional to 28,151.22, 42,214.40 and 15,000.78

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Solution

The fourth proportional to 28,151.22, 42,214.40 and 15,000.78 is: 22,494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.22 : 42,214.40 = 15,000.78 : x
  2. Step 2: Convert to fraction form
    28,151.22/42,214.40 = 15,000.78/x
  3. Step 3: Cross multiply
    28,151.22x = 42,214.40 × 15,000.78
  4. Step 4: Simplify right side
    28,151.22x = 633,248,927.23
  5. Step 5: Solve for x
    x = 633,248,927.23/28,151.22
  6. Step 6: Final answer
    x = 22,494.55

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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.