Home / 12,649.23-18,971.69-3,642.71

Finding the Fourth Proportional to 12,649.23, 18,971.69 and 3,642.71

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Solution

The fourth proportional to 12,649.23, 18,971.69 and 3,642.71 is: 5,463.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.23 : 18,971.69 = 3,642.71 : x
  2. Step 2: Convert to fraction form
    12,649.23/18,971.69 = 3,642.71/x
  3. Step 3: Cross multiply
    12,649.23x = 18,971.69 × 3,642.71
  4. Step 4: Simplify right side
    12,649.23x = 69,108,251.81
  5. Step 5: Solve for x
    x = 69,108,251.81/12,649.23
  6. Step 6: Final answer
    x = 5,463.44

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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.