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Finding the Fourth Proportional to 10,513, 15,771.66 and 4,357

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Solution

The fourth proportional to 10,513, 15,771.66 and 4,357 is: 6,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513 : 15,771.66 = 4,357 : x
  2. Step 2: Convert to fraction form
    10,513/15,771.66 = 4,357/x
  3. Step 3: Cross multiply
    10,513x = 15,771.66 × 4,357
  4. Step 4: Simplify right side
    10,513x = 68,717,122.62
  5. Step 5: Solve for x
    x = 68,717,122.62/10,513
  6. Step 6: Final answer
    x = 6,536.40

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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.