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Finding the Fourth Proportional to 18,885.68, 26,061.90 and 10,502

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Solution

The fourth proportional to 18,885.68, 26,061.90 and 10,502 is: 14,492.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.68 : 26,061.90 = 10,502 : x
  2. Step 2: Convert to fraction form
    18,885.68/26,061.90 = 10,502/x
  3. Step 3: Cross multiply
    18,885.68x = 26,061.90 × 10,502
  4. Step 4: Simplify right side
    18,885.68x = 273,702,073.80
  5. Step 5: Solve for x
    x = 273,702,073.80/18,885.68
  6. Step 6: Final answer
    x = 14,492.57

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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.