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Finding the Fourth Proportional to 15,847.82, 21,867.81 and 9,132.92

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Solution

The fourth proportional to 15,847.82, 21,867.81 and 9,132.92 is: 12,602.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847.82 : 21,867.81 = 9,132.92 : x
  2. Step 2: Convert to fraction form
    15,847.82/21,867.81 = 9,132.92/x
  3. Step 3: Cross multiply
    15,847.82x = 21,867.81 × 9,132.92
  4. Step 4: Simplify right side
    15,847.82x = 199,716,959.31
  5. Step 5: Solve for x
    x = 199,716,959.31/15,847.82
  6. Step 6: Final answer
    x = 12,602.17

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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.