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Finding the Fourth Proportional to 15,801.68, 21,805.93 and 9,087.16

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Solution

The fourth proportional to 15,801.68, 21,805.93 and 9,087.16 is: 12,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,801.68 : 21,805.93 = 9,087.16 : x
  2. Step 2: Convert to fraction form
    15,801.68/21,805.93 = 9,087.16/x
  3. Step 3: Cross multiply
    15,801.68x = 21,805.93 × 9,087.16
  4. Step 4: Simplify right side
    15,801.68x = 198,153,911.26
  5. Step 5: Solve for x
    x = 198,153,911.26/15,801.68
  6. Step 6: Final answer
    x = 12,540.06

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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.