Home / 15,456.40-23,184.60-7,680.40

Finding the Fourth Proportional to 15,456.40, 23,184.60 and 7,680.40

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Solution

The fourth proportional to 15,456.40, 23,184.60 and 7,680.40 is: 11,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.40 : 23,184.60 = 7,680.40 : x
  2. Step 2: Convert to fraction form
    15,456.40/23,184.60 = 7,680.40/x
  3. Step 3: Cross multiply
    15,456.40x = 23,184.60 × 7,680.40
  4. Step 4: Simplify right side
    15,456.40x = 178,067,001.84
  5. Step 5: Solve for x
    x = 178,067,001.84/15,456.40
  6. Step 6: Final answer
    x = 11,520.60

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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.