Home / 17,779.66-24,505.08-12,991.78

Finding the Fourth Proportional to 17,779.66, 24,505.08 and 12,991.78

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Solution

The fourth proportional to 17,779.66, 24,505.08 and 12,991.78 is: 17,906.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,779.66 : 24,505.08 = 12,991.78 : x
  2. Step 2: Convert to fraction form
    17,779.66/24,505.08 = 12,991.78/x
  3. Step 3: Cross multiply
    17,779.66x = 24,505.08 × 12,991.78
  4. Step 4: Simplify right side
    17,779.66x = 318,364,608.24
  5. Step 5: Solve for x
    x = 318,364,608.24/17,779.66
  6. Step 6: Final answer
    x = 17,906.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.