Home / 18,877.98-28,316.84-6,406.78

Finding the Fourth Proportional to 18,877.98, 28,316.84 and 6,406.78

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Solution

The fourth proportional to 18,877.98, 28,316.84 and 6,406.78 is: 9,610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.98 : 28,316.84 = 6,406.78 : x
  2. Step 2: Convert to fraction form
    18,877.98/28,316.84 = 6,406.78/x
  3. Step 3: Cross multiply
    18,877.98x = 28,316.84 × 6,406.78
  4. Step 4: Simplify right side
    18,877.98x = 181,419,748.16
  5. Step 5: Solve for x
    x = 181,419,748.16/18,877.98
  6. Step 6: Final answer
    x = 9,610.13

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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.