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Finding the Fourth Proportional to 16,389.68, 22,618.08 and 8,937.68

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Solution

The fourth proportional to 16,389.68, 22,618.08 and 8,937.68 is: 12,334.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,389.68 : 22,618.08 = 8,937.68 : x
  2. Step 2: Convert to fraction form
    16,389.68/22,618.08 = 8,937.68/x
  3. Step 3: Cross multiply
    16,389.68x = 22,618.08 × 8,937.68
  4. Step 4: Simplify right side
    16,389.68x = 202,153,161.25
  5. Step 5: Solve for x
    x = 202,153,161.25/16,389.68
  6. Step 6: Final answer
    x = 12,334.17

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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.