Home / 12,429.20-18,643.96-4,430.33

Finding the Fourth Proportional to 12,429.20, 18,643.96 and 4,430.33

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Solution

The fourth proportional to 12,429.20, 18,643.96 and 4,430.33 is: 6,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.20 : 18,643.96 = 4,430.33 : x
  2. Step 2: Convert to fraction form
    12,429.20/18,643.96 = 4,430.33/x
  3. Step 3: Cross multiply
    12,429.20x = 18,643.96 × 4,430.33
  4. Step 4: Simplify right side
    12,429.20x = 82,598,877.54
  5. Step 5: Solve for x
    x = 82,598,877.54/12,429.20
  6. Step 6: Final answer
    x = 6,645.55

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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.