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Finding the Fourth Proportional to 18,869.84, 26,040.12 and 10,486.16

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Solution

The fourth proportional to 18,869.84, 26,040.12 and 10,486.16 is: 14,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.84 : 26,040.12 = 10,486.16 : x
  2. Step 2: Convert to fraction form
    18,869.84/26,040.12 = 10,486.16/x
  3. Step 3: Cross multiply
    18,869.84x = 26,040.12 × 10,486.16
  4. Step 4: Simplify right side
    18,869.84x = 273,060,864.74
  5. Step 5: Solve for x
    x = 273,060,864.74/18,869.84
  6. Step 6: Final answer
    x = 14,470.76

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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.