Home / 18,818.40-25,969.94-10,861.06

Finding the Fourth Proportional to 18,818.40, 25,969.94 and 10,861.06

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Solution

The fourth proportional to 18,818.40, 25,969.94 and 10,861.06 is: 14,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.40 : 25,969.94 = 10,861.06 : x
  2. Step 2: Convert to fraction form
    18,818.40/25,969.94 = 10,861.06/x
  3. Step 3: Cross multiply
    18,818.40x = 25,969.94 × 10,861.06
  4. Step 4: Simplify right side
    18,818.40x = 282,061,076.54
  5. Step 5: Solve for x
    x = 282,061,076.54/18,818.40
  6. Step 6: Final answer
    x = 14,988.58

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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.