Home / 28,539.60-39,400.20-17,211.12

Finding the Fourth Proportional to 28,539.60, 39,400.20 and 17,211.12

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Solution

The fourth proportional to 28,539.60, 39,400.20 and 17,211.12 is: 23,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.60 : 39,400.20 = 17,211.12 : x
  2. Step 2: Convert to fraction form
    28,539.60/39,400.20 = 17,211.12/x
  3. Step 3: Cross multiply
    28,539.60x = 39,400.20 × 17,211.12
  4. Step 4: Simplify right side
    28,539.60x = 678,121,570.22
  5. Step 5: Solve for x
    x = 678,121,570.22/28,539.60
  6. Step 6: Final answer
    x = 23,760.72

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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.