Home / 21,452.60-29,619.06-13,398.56

Finding the Fourth Proportional to 21,452.60, 29,619.06 and 13,398.56

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Solution

The fourth proportional to 21,452.60, 29,619.06 and 13,398.56 is: 18,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,452.60 : 29,619.06 = 13,398.56 : x
  2. Step 2: Convert to fraction form
    21,452.60/29,619.06 = 13,398.56/x
  3. Step 3: Cross multiply
    21,452.60x = 29,619.06 × 13,398.56
  4. Step 4: Simplify right side
    21,452.60x = 396,852,752.55
  5. Step 5: Solve for x
    x = 396,852,752.55/21,452.60
  6. Step 6: Final answer
    x = 18,499.05

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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.