Home / 12,649.30-18,973.38-4,330.06

Finding the Fourth Proportional to 12,649.30, 18,973.38 and 4,330.06

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Solution

The fourth proportional to 12,649.30, 18,973.38 and 4,330.06 is: 6,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.30 : 18,973.38 = 4,330.06 : x
  2. Step 2: Convert to fraction form
    12,649.30/18,973.38 = 4,330.06/x
  3. Step 3: Cross multiply
    12,649.30x = 18,973.38 × 4,330.06
  4. Step 4: Simplify right side
    12,649.30x = 82,155,873.80
  5. Step 5: Solve for x
    x = 82,155,873.80/12,649.30
  6. Step 6: Final answer
    x = 6,494.89

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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.