Home / 26,560.78-39,865.79-13,422.40

Finding the Fourth Proportional to 26,560.78, 39,865.79 and 13,422.40

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Solution

The fourth proportional to 26,560.78, 39,865.79 and 13,422.40 is: 20,146.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,560.78 : 39,865.79 = 13,422.40 : x
  2. Step 2: Convert to fraction form
    26,560.78/39,865.79 = 13,422.40/x
  3. Step 3: Cross multiply
    26,560.78x = 39,865.79 × 13,422.40
  4. Step 4: Simplify right side
    26,560.78x = 535,094,579.70
  5. Step 5: Solve for x
    x = 535,094,579.70/26,560.78
  6. Step 6: Final answer
    x = 20,146.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.