Home / 15,487.20-23,214.60-8,456.40

Finding the Fourth Proportional to 15,487.20, 23,214.60 and 8,456.40

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Solution

The fourth proportional to 15,487.20, 23,214.60 and 8,456.40 is: 12,675.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.20 : 23,214.60 = 8,456.40 : x
  2. Step 2: Convert to fraction form
    15,487.20/23,214.60 = 8,456.40/x
  3. Step 3: Cross multiply
    15,487.20x = 23,214.60 × 8,456.40
  4. Step 4: Simplify right side
    15,487.20x = 196,311,943.44
  5. Step 5: Solve for x
    x = 196,311,943.44/15,487.20
  6. Step 6: Final answer
    x = 12,675.75

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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.