Home / 28,079.68-42,156.29-18,779.46

Finding the Fourth Proportional to 28,079.68, 42,156.29 and 18,779.46

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Solution

The fourth proportional to 28,079.68, 42,156.29 and 18,779.46 is: 28,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.68 : 42,156.29 = 18,779.46 : x
  2. Step 2: Convert to fraction form
    28,079.68/42,156.29 = 18,779.46/x
  3. Step 3: Cross multiply
    28,079.68x = 42,156.29 × 18,779.46
  4. Step 4: Simplify right side
    28,079.68x = 791,672,151.02
  5. Step 5: Solve for x
    x = 791,672,151.02/28,079.68
  6. Step 6: Final answer
    x = 28,193.78

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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.