Home / 28,000.39-42,001.14-8,278.93

Finding the Fourth Proportional to 28,000.39, 42,001.14 and 8,278.93

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Solution

The fourth proportional to 28,000.39, 42,001.14 and 8,278.93 is: 12,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.39 : 42,001.14 = 8,278.93 : x
  2. Step 2: Convert to fraction form
    28,000.39/42,001.14 = 8,278.93/x
  3. Step 3: Cross multiply
    28,000.39x = 42,001.14 × 8,278.93
  4. Step 4: Simplify right side
    28,000.39x = 347,724,497.98
  5. Step 5: Solve for x
    x = 347,724,497.98/28,000.39
  6. Step 6: Final answer
    x = 12,418.56

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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.