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Finding the Fourth Proportional to 18,167.84, 25,071.38 and 10,211.40

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Solution

The fourth proportional to 18,167.84, 25,071.38 and 10,211.40 is: 14,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,167.84 : 25,071.38 = 10,211.40 : x
  2. Step 2: Convert to fraction form
    18,167.84/25,071.38 = 10,211.40/x
  3. Step 3: Cross multiply
    18,167.84x = 25,071.38 × 10,211.40
  4. Step 4: Simplify right side
    18,167.84x = 256,013,889.73
  5. Step 5: Solve for x
    x = 256,013,889.73/18,167.84
  6. Step 6: Final answer
    x = 14,091.60

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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.