Home / 28,118.92-42,178.38-7,342.24

Finding the Fourth Proportional to 28,118.92, 42,178.38 and 7,342.24

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Solution

The fourth proportional to 28,118.92, 42,178.38 and 7,342.24 is: 11,013.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.92 : 42,178.38 = 7,342.24 : x
  2. Step 2: Convert to fraction form
    28,118.92/42,178.38 = 7,342.24/x
  3. Step 3: Cross multiply
    28,118.92x = 42,178.38 × 7,342.24
  4. Step 4: Simplify right side
    28,118.92x = 309,683,788.77
  5. Step 5: Solve for x
    x = 309,683,788.77/28,118.92
  6. Step 6: Final answer
    x = 11,013.36

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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.