Home / 28,352.47-42,480.10-20,017.57

Finding the Fourth Proportional to 28,352.47, 42,480.10 and 20,017.57

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Solution

The fourth proportional to 28,352.47, 42,480.10 and 20,017.57 is: 29,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.47 : 42,480.10 = 20,017.57 : x
  2. Step 2: Convert to fraction form
    28,352.47/42,480.10 = 20,017.57/x
  3. Step 3: Cross multiply
    28,352.47x = 42,480.10 × 20,017.57
  4. Step 4: Simplify right side
    28,352.47x = 850,348,062.87
  5. Step 5: Solve for x
    x = 850,348,062.87/28,352.47
  6. Step 6: Final answer
    x = 29,992.03

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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.