Home / 40,829.20-61,195.20-21,097.60

Finding the Fourth Proportional to 40,829.20, 61,195.20 and 21,097.60

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Solution

The fourth proportional to 40,829.20, 61,195.20 and 21,097.60 is: 31,621.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,829.20 : 61,195.20 = 21,097.60 : x
  2. Step 2: Convert to fraction form
    40,829.20/61,195.20 = 21,097.60/x
  3. Step 3: Cross multiply
    40,829.20x = 61,195.20 × 21,097.60
  4. Step 4: Simplify right side
    40,829.20x = 1,291,071,851.52
  5. Step 5: Solve for x
    x = 1,291,071,851.52/40,829.20
  6. Step 6: Final answer
    x = 31,621.29

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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.