Home / 20,648.97-28,500.01-12,585.25

Finding the Fourth Proportional to 20,648.97, 28,500.01 and 12,585.25

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Solution

The fourth proportional to 20,648.97, 28,500.01 and 12,585.25 is: 17,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.97 : 28,500.01 = 12,585.25 : x
  2. Step 2: Convert to fraction form
    20,648.97/28,500.01 = 12,585.25/x
  3. Step 3: Cross multiply
    20,648.97x = 28,500.01 × 12,585.25
  4. Step 4: Simplify right side
    20,648.97x = 358,679,648.14
  5. Step 5: Solve for x
    x = 358,679,648.14/20,648.97
  6. Step 6: Final answer
    x = 17,370.34

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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.