Home / 20,586.18-28,401.66-12,625.50

Finding the Fourth Proportional to 20,586.18, 28,401.66 and 12,625.50

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Solution

The fourth proportional to 20,586.18, 28,401.66 and 12,625.50 is: 17,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.18 : 28,401.66 = 12,625.50 : x
  2. Step 2: Convert to fraction form
    20,586.18/28,401.66 = 12,625.50/x
  3. Step 3: Cross multiply
    20,586.18x = 28,401.66 × 12,625.50
  4. Step 4: Simplify right side
    20,586.18x = 358,585,158.33
  5. Step 5: Solve for x
    x = 358,585,158.33/20,586.18
  6. Step 6: Final answer
    x = 17,418.73

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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.