Home / 19,916.20-29,876.46-7,442.20

Finding the Fourth Proportional to 19,916.20, 29,876.46 and 7,442.20

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Solution

The fourth proportional to 19,916.20, 29,876.46 and 7,442.20 is: 11,164.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.20 : 29,876.46 = 7,442.20 : x
  2. Step 2: Convert to fraction form
    19,916.20/29,876.46 = 7,442.20/x
  3. Step 3: Cross multiply
    19,916.20x = 29,876.46 × 7,442.20
  4. Step 4: Simplify right side
    19,916.20x = 222,346,590.61
  5. Step 5: Solve for x
    x = 222,346,590.61/19,916.20
  6. Step 6: Final answer
    x = 11,164.11

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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.