Home / 18,944.90-26,119.64-12,966.30

Finding the Fourth Proportional to 18,944.90, 26,119.64 and 12,966.30

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Solution

The fourth proportional to 18,944.90, 26,119.64 and 12,966.30 is: 17,876.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944.90 : 26,119.64 = 12,966.30 : x
  2. Step 2: Convert to fraction form
    18,944.90/26,119.64 = 12,966.30/x
  3. Step 3: Cross multiply
    18,944.90x = 26,119.64 × 12,966.30
  4. Step 4: Simplify right side
    18,944.90x = 338,675,088.13
  5. Step 5: Solve for x
    x = 338,675,088.13/18,944.90
  6. Step 6: Final answer
    x = 17,876.85

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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.