Home / 20,124.87-27,754.14-12,571.89

Finding the Fourth Proportional to 20,124.87, 27,754.14 and 12,571.89

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Solution

The fourth proportional to 20,124.87, 27,754.14 and 12,571.89 is: 17,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.87 : 27,754.14 = 12,571.89 : x
  2. Step 2: Convert to fraction form
    20,124.87/27,754.14 = 12,571.89/x
  3. Step 3: Cross multiply
    20,124.87x = 27,754.14 × 12,571.89
  4. Step 4: Simplify right side
    20,124.87x = 348,921,995.12
  5. Step 5: Solve for x
    x = 348,921,995.12/20,124.87
  6. Step 6: Final answer
    x = 17,337.85

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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.