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Finding the Fourth Proportional to 15,859.73, 21,888.75 and 9,144.04

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Solution

The fourth proportional to 15,859.73, 21,888.75 and 9,144.04 is: 12,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.73 : 21,888.75 = 9,144.04 : x
  2. Step 2: Convert to fraction form
    15,859.73/21,888.75 = 9,144.04/x
  3. Step 3: Cross multiply
    15,859.73x = 21,888.75 × 9,144.04
  4. Step 4: Simplify right side
    15,859.73x = 200,151,550.83
  5. Step 5: Solve for x
    x = 200,151,550.83/15,859.73
  6. Step 6: Final answer
    x = 12,620.11

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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.