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Finding the Fourth Proportional to 18,381.75, 27,528.75 and 10,574.16

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Solution

The fourth proportional to 18,381.75, 27,528.75 and 10,574.16 is: 15,836.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.75 : 27,528.75 = 10,574.16 : x
  2. Step 2: Convert to fraction form
    18,381.75/27,528.75 = 10,574.16/x
  3. Step 3: Cross multiply
    18,381.75x = 27,528.75 × 10,574.16
  4. Step 4: Simplify right side
    18,381.75x = 291,093,407.10
  5. Step 5: Solve for x
    x = 291,093,407.10/18,381.75
  6. Step 6: Final answer
    x = 15,836.00

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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.