Home / 28,110.78-42,166.15-9,387.32

Finding the Fourth Proportional to 28,110.78, 42,166.15 and 9,387.32

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Solution

The fourth proportional to 28,110.78, 42,166.15 and 9,387.32 is: 14,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.78 : 42,166.15 = 9,387.32 : x
  2. Step 2: Convert to fraction form
    28,110.78/42,166.15 = 9,387.32/x
  3. Step 3: Cross multiply
    28,110.78x = 42,166.15 × 9,387.32
  4. Step 4: Simplify right side
    28,110.78x = 395,826,908.92
  5. Step 5: Solve for x
    x = 395,826,908.92/28,110.78
  6. Step 6: Final answer
    x = 14,080.96

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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.