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Finding the Fourth Proportional to 18,269.84, 25,211.16 and 10,312.40

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Solution

The fourth proportional to 18,269.84, 25,211.16 and 10,312.40 is: 14,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.84 : 25,211.16 = 10,312.40 : x
  2. Step 2: Convert to fraction form
    18,269.84/25,211.16 = 10,312.40/x
  3. Step 3: Cross multiply
    18,269.84x = 25,211.16 × 10,312.40
  4. Step 4: Simplify right side
    18,269.84x = 259,987,566.38
  5. Step 5: Solve for x
    x = 259,987,566.38/18,269.84
  6. Step 6: Final answer
    x = 14,230.42

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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.