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Finding the Fourth Proportional to 26,143.30, 39,211.70 and 15,476

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Solution

The fourth proportional to 26,143.30, 39,211.70 and 15,476 is: 23,212.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,143.30 : 39,211.70 = 15,476 : x
  2. Step 2: Convert to fraction form
    26,143.30/39,211.70 = 15,476/x
  3. Step 3: Cross multiply
    26,143.30x = 39,211.70 × 15,476
  4. Step 4: Simplify right side
    26,143.30x = 606,840,307.89
  5. Step 5: Solve for x
    x = 606,840,307.89/26,143.30
  6. Step 6: Final answer
    x = 23,212.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.