Home / 20,647.13-28,498.34-12,586.25

Finding the Fourth Proportional to 20,647.13, 28,498.34 and 12,586.25

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Solution

The fourth proportional to 20,647.13, 28,498.34 and 12,586.25 is: 17,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.13 : 28,498.34 = 12,586.25 : x
  2. Step 2: Convert to fraction form
    20,647.13/28,498.34 = 12,586.25/x
  3. Step 3: Cross multiply
    20,647.13x = 28,498.34 × 12,586.25
  4. Step 4: Simplify right side
    20,647.13x = 358,687,334.54
  5. Step 5: Solve for x
    x = 358,687,334.54/20,647.13
  6. Step 6: Final answer
    x = 17,372.27

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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.