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Finding the Fourth Proportional to 15,991.08, 22,066.88 and 8,916.14

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Solution

The fourth proportional to 15,991.08, 22,066.88 and 8,916.14 is: 12,303.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,991.08 : 22,066.88 = 8,916.14 : x
  2. Step 2: Convert to fraction form
    15,991.08/22,066.88 = 8,916.14/x
  3. Step 3: Cross multiply
    15,991.08x = 22,066.88 × 8,916.14
  4. Step 4: Simplify right side
    15,991.08x = 196,751,391.44
  5. Step 5: Solve for x
    x = 196,751,391.44/15,991.08
  6. Step 6: Final answer
    x = 12,303.82

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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.