Home / 20,039.68-27,656.94-12,877.30

Finding the Fourth Proportional to 20,039.68, 27,656.94 and 12,877.30

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Solution

The fourth proportional to 20,039.68, 27,656.94 and 12,877.30 is: 17,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.68 : 27,656.94 = 12,877.30 : x
  2. Step 2: Convert to fraction form
    20,039.68/27,656.94 = 12,877.30/x
  3. Step 3: Cross multiply
    20,039.68x = 27,656.94 × 12,877.30
  4. Step 4: Simplify right side
    20,039.68x = 356,146,713.46
  5. Step 5: Solve for x
    x = 356,146,713.46/20,039.68
  6. Step 6: Final answer
    x = 17,772.08

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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.