Home / 18,869.58-26,039.75-10,912.55

Finding the Fourth Proportional to 18,869.58, 26,039.75 and 10,912.55

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Solution

The fourth proportional to 18,869.58, 26,039.75 and 10,912.55 is: 15,059.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.58 : 26,039.75 = 10,912.55 : x
  2. Step 2: Convert to fraction form
    18,869.58/26,039.75 = 10,912.55/x
  3. Step 3: Cross multiply
    18,869.58x = 26,039.75 × 10,912.55
  4. Step 4: Simplify right side
    18,869.58x = 284,159,889.10
  5. Step 5: Solve for x
    x = 284,159,889.10/18,869.58
  6. Step 6: Final answer
    x = 15,059.15

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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.