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Finding the Fourth Proportional to 18,856.10, 26,020.17 and 10,356.57

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Solution

The fourth proportional to 18,856.10, 26,020.17 and 10,356.57 is: 14,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856.10 : 26,020.17 = 10,356.57 : x
  2. Step 2: Convert to fraction form
    18,856.10/26,020.17 = 10,356.57/x
  3. Step 3: Cross multiply
    18,856.10x = 26,020.17 × 10,356.57
  4. Step 4: Simplify right side
    18,856.10x = 269,479,712.02
  5. Step 5: Solve for x
    x = 269,479,712.02/18,856.10
  6. Step 6: Final answer
    x = 14,291.38

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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.