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Finding the Fourth Proportional to 15,001.84, 20,702.55 and 8,287.48

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Solution

The fourth proportional to 15,001.84, 20,702.55 and 8,287.48 is: 11,436.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.84 : 20,702.55 = 8,287.48 : x
  2. Step 2: Convert to fraction form
    15,001.84/20,702.55 = 8,287.48/x
  3. Step 3: Cross multiply
    15,001.84x = 20,702.55 × 8,287.48
  4. Step 4: Simplify right side
    15,001.84x = 171,571,969.07
  5. Step 5: Solve for x
    x = 171,571,969.07/15,001.84
  6. Step 6: Final answer
    x = 11,436.73

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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.