Home / 15,531.76-23,259.66-8,142.40

Finding the Fourth Proportional to 15,531.76, 23,259.66 and 8,142.40

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Solution

The fourth proportional to 15,531.76, 23,259.66 and 8,142.40 is: 12,193.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.76 : 23,259.66 = 8,142.40 : x
  2. Step 2: Convert to fraction form
    15,531.76/23,259.66 = 8,142.40/x
  3. Step 3: Cross multiply
    15,531.76x = 23,259.66 × 8,142.40
  4. Step 4: Simplify right side
    15,531.76x = 189,389,455.58
  5. Step 5: Solve for x
    x = 189,389,455.58/15,531.76
  6. Step 6: Final answer
    x = 12,193.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.