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Finding the Fourth Proportional to 17,812.66, 26,718.38 and 8,457.16

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Solution

The fourth proportional to 17,812.66, 26,718.38 and 8,457.16 is: 12,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.66 : 26,718.38 = 8,457.16 : x
  2. Step 2: Convert to fraction form
    17,812.66/26,718.38 = 8,457.16/x
  3. Step 3: Cross multiply
    17,812.66x = 26,718.38 × 8,457.16
  4. Step 4: Simplify right side
    17,812.66x = 225,961,614.60
  5. Step 5: Solve for x
    x = 225,961,614.60/17,812.66
  6. Step 6: Final answer
    x = 12,685.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.