Home / 12,484.66-18,729.69-3,720.28

Finding the Fourth Proportional to 12,484.66, 18,729.69 and 3,720.28

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Solution

The fourth proportional to 12,484.66, 18,729.69 and 3,720.28 is: 5,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.66 : 18,729.69 = 3,720.28 : x
  2. Step 2: Convert to fraction form
    12,484.66/18,729.69 = 3,720.28/x
  3. Step 3: Cross multiply
    12,484.66x = 18,729.69 × 3,720.28
  4. Step 4: Simplify right side
    12,484.66x = 69,679,691.11
  5. Step 5: Solve for x
    x = 69,679,691.11/12,484.66
  6. Step 6: Final answer
    x = 5,581.22

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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.