Home / 18,315.10-27,452.40-7,218.10

Finding the Fourth Proportional to 18,315.10, 27,452.40 and 7,218.10

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Solution

The fourth proportional to 18,315.10, 27,452.40 and 7,218.10 is: 10,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.10 : 27,452.40 = 7,218.10 : x
  2. Step 2: Convert to fraction form
    18,315.10/27,452.40 = 7,218.10/x
  3. Step 3: Cross multiply
    18,315.10x = 27,452.40 × 7,218.10
  4. Step 4: Simplify right side
    18,315.10x = 198,154,168.44
  5. Step 5: Solve for x
    x = 198,154,168.44/18,315.10
  6. Step 6: Final answer
    x = 10,819.17

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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.