Home / 12,765.80-19,148.70-8,877.80

Finding the Fourth Proportional to 12,765.80, 19,148.70 and 8,877.80

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Solution

The fourth proportional to 12,765.80, 19,148.70 and 8,877.80 is: 13,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.80 : 19,148.70 = 8,877.80 : x
  2. Step 2: Convert to fraction form
    12,765.80/19,148.70 = 8,877.80/x
  3. Step 3: Cross multiply
    12,765.80x = 19,148.70 × 8,877.80
  4. Step 4: Simplify right side
    12,765.80x = 169,998,328.86
  5. Step 5: Solve for x
    x = 169,998,328.86/12,765.80
  6. Step 6: Final answer
    x = 13,316.70

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Similar ratio
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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.