Home / 12,243.60-18,368.46-3,478.62

Finding the Fourth Proportional to 12,243.60, 18,368.46 and 3,478.62

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Solution

The fourth proportional to 12,243.60, 18,368.46 and 3,478.62 is: 5,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.60 : 18,368.46 = 3,478.62 : x
  2. Step 2: Convert to fraction form
    12,243.60/18,368.46 = 3,478.62/x
  3. Step 3: Cross multiply
    12,243.60x = 18,368.46 × 3,478.62
  4. Step 4: Simplify right side
    12,243.60x = 63,896,892.33
  5. Step 5: Solve for x
    x = 63,896,892.33/12,243.60
  6. Step 6: Final answer
    x = 5,218.80

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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.