Home / 40,890.78-61,343.28-15,944.40

Finding the Fourth Proportional to 40,890.78, 61,343.28 and 15,944.40

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Solution

The fourth proportional to 40,890.78, 61,343.28 and 15,944.40 is: 23,919.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.78 : 61,343.28 = 15,944.40 : x
  2. Step 2: Convert to fraction form
    40,890.78/61,343.28 = 15,944.40/x
  3. Step 3: Cross multiply
    40,890.78x = 61,343.28 × 15,944.40
  4. Step 4: Simplify right side
    40,890.78x = 978,081,793.63
  5. Step 5: Solve for x
    x = 978,081,793.63/40,890.78
  6. Step 6: Final answer
    x = 23,919.37

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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.