Home / 18,531.34-25,577.20-11,815.42

Finding the Fourth Proportional to 18,531.34, 25,577.20 and 11,815.42

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Solution

The fourth proportional to 18,531.34, 25,577.20 and 11,815.42 is: 16,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.34 : 25,577.20 = 11,815.42 : x
  2. Step 2: Convert to fraction form
    18,531.34/25,577.20 = 11,815.42/x
  3. Step 3: Cross multiply
    18,531.34x = 25,577.20 × 11,815.42
  4. Step 4: Simplify right side
    18,531.34x = 302,205,360.42
  5. Step 5: Solve for x
    x = 302,205,360.42/18,531.34
  6. Step 6: Final answer
    x = 16,307.80

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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.