Home / 19,878.20-29,818.32-5,087.25

Finding the Fourth Proportional to 19,878.20, 29,818.32 and 5,087.25

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Solution

The fourth proportional to 19,878.20, 29,818.32 and 5,087.25 is: 7,631.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.20 : 29,818.32 = 5,087.25 : x
  2. Step 2: Convert to fraction form
    19,878.20/29,818.32 = 5,087.25/x
  3. Step 3: Cross multiply
    19,878.20x = 29,818.32 × 5,087.25
  4. Step 4: Simplify right side
    19,878.20x = 151,693,248.42
  5. Step 5: Solve for x
    x = 151,693,248.42/19,878.20
  6. Step 6: Final answer
    x = 7,631.14

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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.