Home / 10,878.08-16,291.20-8,394.80

Finding the Fourth Proportional to 10,878.08, 16,291.20 and 8,394.80

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Solution

The fourth proportional to 10,878.08, 16,291.20 and 8,394.80 is: 12,572.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.08 : 16,291.20 = 8,394.80 : x
  2. Step 2: Convert to fraction form
    10,878.08/16,291.20 = 8,394.80/x
  3. Step 3: Cross multiply
    10,878.08x = 16,291.20 × 8,394.80
  4. Step 4: Simplify right side
    10,878.08x = 136,761,365.76
  5. Step 5: Solve for x
    x = 136,761,365.76/10,878.08
  6. Step 6: Final answer
    x = 12,572.20

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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.