Home / 18,531.60-25,577.56-11,815.68

Finding the Fourth Proportional to 18,531.60, 25,577.56 and 11,815.68

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Solution

The fourth proportional to 18,531.60, 25,577.56 and 11,815.68 is: 16,308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.60 : 25,577.56 = 11,815.68 : x
  2. Step 2: Convert to fraction form
    18,531.60/25,577.56 = 11,815.68/x
  3. Step 3: Cross multiply
    18,531.60x = 25,577.56 × 11,815.68
  4. Step 4: Simplify right side
    18,531.60x = 302,216,264.14
  5. Step 5: Solve for x
    x = 302,216,264.14/18,531.60
  6. Step 6: Final answer
    x = 16,308.16

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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.