Home / 28,620.76-39,460.35-20,454.12

Finding the Fourth Proportional to 28,620.76, 39,460.35 and 20,454.12

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Solution

The fourth proportional to 28,620.76, 39,460.35 and 20,454.12 is: 28,200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.76 : 39,460.35 = 20,454.12 : x
  2. Step 2: Convert to fraction form
    28,620.76/39,460.35 = 20,454.12/x
  3. Step 3: Cross multiply
    28,620.76x = 39,460.35 × 20,454.12
  4. Step 4: Simplify right side
    28,620.76x = 807,126,734.14
  5. Step 5: Solve for x
    x = 807,126,734.14/28,620.76
  6. Step 6: Final answer
    x = 28,200.75

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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.