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Finding the Fourth Proportional to 18,885.21, 26,061.13 and 10,271.17

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Solution

The fourth proportional to 18,885.21, 26,061.13 and 10,271.17 is: 14,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.21 : 26,061.13 = 10,271.17 : x
  2. Step 2: Convert to fraction form
    18,885.21/26,061.13 = 10,271.17/x
  3. Step 3: Cross multiply
    18,885.21x = 26,061.13 × 10,271.17
  4. Step 4: Simplify right side
    18,885.21x = 267,678,296.62
  5. Step 5: Solve for x
    x = 267,678,296.62/18,885.21
  6. Step 6: Final answer
    x = 14,173.96

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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.