Home / 20,038.68-27,655.56-12,876.30

Finding the Fourth Proportional to 20,038.68, 27,655.56 and 12,876.30

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Solution

The fourth proportional to 20,038.68, 27,655.56 and 12,876.30 is: 17,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.68 : 27,655.56 = 12,876.30 : x
  2. Step 2: Convert to fraction form
    20,038.68/27,655.56 = 12,876.30/x
  3. Step 3: Cross multiply
    20,038.68x = 27,655.56 × 12,876.30
  4. Step 4: Simplify right side
    20,038.68x = 356,101,287.23
  5. Step 5: Solve for x
    x = 356,101,287.23/20,038.68
  6. Step 6: Final answer
    x = 17,770.70

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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.