Home / 10,565.20-15,828.60-8,606.80

Finding the Fourth Proportional to 10,565.20, 15,828.60 and 8,606.80

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Solution

The fourth proportional to 10,565.20, 15,828.60 and 8,606.80 is: 12,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,565.20 : 15,828.60 = 8,606.80 : x
  2. Step 2: Convert to fraction form
    10,565.20/15,828.60 = 8,606.80/x
  3. Step 3: Cross multiply
    10,565.20x = 15,828.60 × 8,606.80
  4. Step 4: Simplify right side
    10,565.20x = 136,233,594.48
  5. Step 5: Solve for x
    x = 136,233,594.48/10,565.20
  6. Step 6: Final answer
    x = 12,894.56

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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.