Home / 28,101.76-42,168.87-15,620.74

Finding the Fourth Proportional to 28,101.76, 42,168.87 and 15,620.74

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Solution

The fourth proportional to 28,101.76, 42,168.87 and 15,620.74 is: 23,440.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.76 : 42,168.87 = 15,620.74 : x
  2. Step 2: Convert to fraction form
    28,101.76/42,168.87 = 15,620.74/x
  3. Step 3: Cross multiply
    28,101.76x = 42,168.87 × 15,620.74
  4. Step 4: Simplify right side
    28,101.76x = 658,708,848.94
  5. Step 5: Solve for x
    x = 658,708,848.94/28,101.76
  6. Step 6: Final answer
    x = 23,440.13

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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.