Home / 20,040.95-27,656.78-12,490.34

Finding the Fourth Proportional to 20,040.95, 27,656.78 and 12,490.34

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Solution

The fourth proportional to 20,040.95, 27,656.78 and 12,490.34 is: 17,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.95 : 27,656.78 = 12,490.34 : x
  2. Step 2: Convert to fraction form
    20,040.95/27,656.78 = 12,490.34/x
  3. Step 3: Cross multiply
    20,040.95x = 27,656.78 × 12,490.34
  4. Step 4: Simplify right side
    20,040.95x = 345,442,384.77
  5. Step 5: Solve for x
    x = 345,442,384.77/20,040.95
  6. Step 6: Final answer
    x = 17,236.82

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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.