Home / 12,909.05-19,365.37-4,146.65

Finding the Fourth Proportional to 12,909.05, 19,365.37 and 4,146.65

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Solution

The fourth proportional to 12,909.05, 19,365.37 and 4,146.65 is: 6,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.05 : 19,365.37 = 4,146.65 : x
  2. Step 2: Convert to fraction form
    12,909.05/19,365.37 = 4,146.65/x
  3. Step 3: Cross multiply
    12,909.05x = 19,365.37 × 4,146.65
  4. Step 4: Simplify right side
    12,909.05x = 80,301,304.32
  5. Step 5: Solve for x
    x = 80,301,304.32/12,909.05
  6. Step 6: Final answer
    x = 6,220.55

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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.