Home / 40,918.60-61,377.90-13,216.60

Finding the Fourth Proportional to 40,918.60, 61,377.90 and 13,216.60

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Solution

The fourth proportional to 40,918.60, 61,377.90 and 13,216.60 is: 19,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,918.60 : 61,377.90 = 13,216.60 : x
  2. Step 2: Convert to fraction form
    40,918.60/61,377.90 = 13,216.60/x
  3. Step 3: Cross multiply
    40,918.60x = 61,377.90 × 13,216.60
  4. Step 4: Simplify right side
    40,918.60x = 811,207,153.14
  5. Step 5: Solve for x
    x = 811,207,153.14/40,918.60
  6. Step 6: Final answer
    x = 19,824.90

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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.