Home / 20,734.57-28,591.54-13,648.69

Finding the Fourth Proportional to 20,734.57, 28,591.54 and 13,648.69

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Solution

The fourth proportional to 20,734.57, 28,591.54 and 13,648.69 is: 18,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.57 : 28,591.54 = 13,648.69 : x
  2. Step 2: Convert to fraction form
    20,734.57/28,591.54 = 13,648.69/x
  3. Step 3: Cross multiply
    20,734.57x = 28,591.54 × 13,648.69
  4. Step 4: Simplify right side
    20,734.57x = 390,237,066.08
  5. Step 5: Solve for x
    x = 390,237,066.08/20,734.57
  6. Step 6: Final answer
    x = 18,820.60

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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.