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Finding the Fourth Proportional to 18,889.29, 26,060.90 and 10,928.61

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Solution

The fourth proportional to 18,889.29, 26,060.90 and 10,928.61 is: 15,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.29 : 26,060.90 = 10,928.61 : x
  2. Step 2: Convert to fraction form
    18,889.29/26,060.90 = 10,928.61/x
  3. Step 3: Cross multiply
    18,889.29x = 26,060.90 × 10,928.61
  4. Step 4: Simplify right side
    18,889.29x = 284,809,357.71
  5. Step 5: Solve for x
    x = 284,809,357.71/18,889.29
  6. Step 6: Final answer
    x = 15,077.82

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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.