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Finding the Fourth Proportional to 21,307.52, 31,968.48 and 8,833.52

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Solution

The fourth proportional to 21,307.52, 31,968.48 and 8,833.52 is: 13,253.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.52 : 31,968.48 = 8,833.52 : x
  2. Step 2: Convert to fraction form
    21,307.52/31,968.48 = 8,833.52/x
  3. Step 3: Cross multiply
    21,307.52x = 31,968.48 × 8,833.52
  4. Step 4: Simplify right side
    21,307.52x = 282,394,207.45
  5. Step 5: Solve for x
    x = 282,394,207.45/21,307.52
  6. Step 6: Final answer
    x = 13,253.26

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1.5x scale

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.