Home / 20,363.67-28,115.55-12,718.62

Finding the Fourth Proportional to 20,363.67, 28,115.55 and 12,718.62

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Solution

The fourth proportional to 20,363.67, 28,115.55 and 12,718.62 is: 17,560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.67 : 28,115.55 = 12,718.62 : x
  2. Step 2: Convert to fraction form
    20,363.67/28,115.55 = 12,718.62/x
  3. Step 3: Cross multiply
    20,363.67x = 28,115.55 × 12,718.62
  4. Step 4: Simplify right side
    20,363.67x = 357,590,996.54
  5. Step 5: Solve for x
    x = 357,590,996.54/20,363.67
  6. Step 6: Final answer
    x = 17,560.24

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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.