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Finding the Fourth Proportional to 15,897.78, 21,937.50 and 8,824.19

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Solution

The fourth proportional to 15,897.78, 21,937.50 and 8,824.19 is: 12,176.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.78 : 21,937.50 = 8,824.19 : x
  2. Step 2: Convert to fraction form
    15,897.78/21,937.50 = 8,824.19/x
  3. Step 3: Cross multiply
    15,897.78x = 21,937.50 × 8,824.19
  4. Step 4: Simplify right side
    15,897.78x = 193,580,558.44
  5. Step 5: Solve for x
    x = 193,580,558.44/15,897.78
  6. Step 6: Final answer
    x = 12,176.58

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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.