Home / 15,442.76-21,326.13-13,191.50

Finding the Fourth Proportional to 15,442.76, 21,326.13 and 13,191.50

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Solution

The fourth proportional to 15,442.76, 21,326.13 and 13,191.50 is: 18,217.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.76 : 21,326.13 = 13,191.50 : x
  2. Step 2: Convert to fraction form
    15,442.76/21,326.13 = 13,191.50/x
  3. Step 3: Cross multiply
    15,442.76x = 21,326.13 × 13,191.50
  4. Step 4: Simplify right side
    15,442.76x = 281,323,537.26
  5. Step 5: Solve for x
    x = 281,323,537.26/15,442.76
  6. Step 6: Final answer
    x = 18,217.19

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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.