Home / 29,308.62-40,445.28-15,879.36

Finding the Fourth Proportional to 29,308.62, 40,445.28 and 15,879.36

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Solution

The fourth proportional to 29,308.62, 40,445.28 and 15,879.36 is: 21,913.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,308.62 : 40,445.28 = 15,879.36 : x
  2. Step 2: Convert to fraction form
    29,308.62/40,445.28 = 15,879.36/x
  3. Step 3: Cross multiply
    29,308.62x = 40,445.28 × 15,879.36
  4. Step 4: Simplify right side
    29,308.62x = 642,245,161.42
  5. Step 5: Solve for x
    x = 642,245,161.42/29,308.62
  6. Step 6: Final answer
    x = 21,913.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.