Home / 12,219.12-18,328.68-5,644.08

Finding the Fourth Proportional to 12,219.12, 18,328.68 and 5,644.08

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Solution

The fourth proportional to 12,219.12, 18,328.68 and 5,644.08 is: 8,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.12 : 18,328.68 = 5,644.08 : x
  2. Step 2: Convert to fraction form
    12,219.12/18,328.68 = 5,644.08/x
  3. Step 3: Cross multiply
    12,219.12x = 18,328.68 × 5,644.08
  4. Step 4: Simplify right side
    12,219.12x = 103,448,536.21
  5. Step 5: Solve for x
    x = 103,448,536.21/12,219.12
  6. Step 6: Final answer
    x = 8,466.12

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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.