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Finding the Fourth Proportional to 15,989.99, 22,066.86 and 8,916.41

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Solution

The fourth proportional to 15,989.99, 22,066.86 and 8,916.41 is: 12,305.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.99 : 22,066.86 = 8,916.41 : x
  2. Step 2: Convert to fraction form
    15,989.99/22,066.86 = 8,916.41/x
  3. Step 3: Cross multiply
    15,989.99x = 22,066.86 × 8,916.41
  4. Step 4: Simplify right side
    15,989.99x = 196,757,060.84
  5. Step 5: Solve for x
    x = 196,757,060.84/15,989.99
  6. Step 6: Final answer
    x = 12,305.02

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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.