Home / 18,618.60-25,687.98-12,243.36

Finding the Fourth Proportional to 18,618.60, 25,687.98 and 12,243.36

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Solution

The fourth proportional to 18,618.60, 25,687.98 and 12,243.36 is: 16,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.60 : 25,687.98 = 12,243.36 : x
  2. Step 2: Convert to fraction form
    18,618.60/25,687.98 = 12,243.36/x
  3. Step 3: Cross multiply
    18,618.60x = 25,687.98 × 12,243.36
  4. Step 4: Simplify right side
    18,618.60x = 314,507,186.81
  5. Step 5: Solve for x
    x = 314,507,186.81/18,618.60
  6. Step 6: Final answer
    x = 16,892.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.