Home / 28,602.15-39,447.57-20,132.31

Finding the Fourth Proportional to 28,602.15, 39,447.57 and 20,132.31

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Solution

The fourth proportional to 28,602.15, 39,447.57 and 20,132.31 is: 27,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.15 : 39,447.57 = 20,132.31 : x
  2. Step 2: Convert to fraction form
    28,602.15/39,447.57 = 20,132.31/x
  3. Step 3: Cross multiply
    28,602.15x = 39,447.57 × 20,132.31
  4. Step 4: Simplify right side
    28,602.15x = 794,170,707.99
  5. Step 5: Solve for x
    x = 794,170,707.99/28,602.15
  6. Step 6: Final answer
    x = 27,766.12

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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.