Home / 20,017.32-27,620.10-12,561.96

Finding the Fourth Proportional to 20,017.32, 27,620.10 and 12,561.96

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Solution

The fourth proportional to 20,017.32, 27,620.10 and 12,561.96 is: 17,333.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.32 : 27,620.10 = 12,561.96 : x
  2. Step 2: Convert to fraction form
    20,017.32/27,620.10 = 12,561.96/x
  3. Step 3: Cross multiply
    20,017.32x = 27,620.10 × 12,561.96
  4. Step 4: Simplify right side
    20,017.32x = 346,962,591.40
  5. Step 5: Solve for x
    x = 346,962,591.40/20,017.32
  6. Step 6: Final answer
    x = 17,333.12

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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.