Home / 18,317.12-27,457.12-7,219.48

Finding the Fourth Proportional to 18,317.12, 27,457.12 and 7,219.48

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Solution

The fourth proportional to 18,317.12, 27,457.12 and 7,219.48 is: 10,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,317.12 : 27,457.12 = 7,219.48 : x
  2. Step 2: Convert to fraction form
    18,317.12/27,457.12 = 7,219.48/x
  3. Step 3: Cross multiply
    18,317.12x = 27,457.12 × 7,219.48
  4. Step 4: Simplify right side
    18,317.12x = 198,226,128.70
  5. Step 5: Solve for x
    x = 198,226,128.70/18,317.12
  6. Step 6: Final answer
    x = 10,821.90

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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.