Home / 20,686.12-28,552.70-12,193.17

Finding the Fourth Proportional to 20,686.12, 28,552.70 and 12,193.17

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Solution

The fourth proportional to 20,686.12, 28,552.70 and 12,193.17 is: 16,830.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.12 : 28,552.70 = 12,193.17 : x
  2. Step 2: Convert to fraction form
    20,686.12/28,552.70 = 12,193.17/x
  3. Step 3: Cross multiply
    20,686.12x = 28,552.70 × 12,193.17
  4. Step 4: Simplify right side
    20,686.12x = 348,147,848.47
  5. Step 5: Solve for x
    x = 348,147,848.47/20,686.12
  6. Step 6: Final answer
    x = 16,830.02

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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.