Home / 28,175.16-42,262.62-7,115.28

Finding the Fourth Proportional to 28,175.16, 42,262.62 and 7,115.28

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Solution

The fourth proportional to 28,175.16, 42,262.62 and 7,115.28 is: 10,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.16 : 42,262.62 = 7,115.28 : x
  2. Step 2: Convert to fraction form
    28,175.16/42,262.62 = 7,115.28/x
  3. Step 3: Cross multiply
    28,175.16x = 42,262.62 × 7,115.28
  4. Step 4: Simplify right side
    28,175.16x = 300,710,374.83
  5. Step 5: Solve for x
    x = 300,710,374.83/28,175.16
  6. Step 6: Final answer
    x = 10,672.89

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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.