Home / 12,747.51-19,122.11-3,387.40

Finding the Fourth Proportional to 12,747.51, 19,122.11 and 3,387.40

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Solution

The fourth proportional to 12,747.51, 19,122.11 and 3,387.40 is: 5,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.51 : 19,122.11 = 3,387.40 : x
  2. Step 2: Convert to fraction form
    12,747.51/19,122.11 = 3,387.40/x
  3. Step 3: Cross multiply
    12,747.51x = 19,122.11 × 3,387.40
  4. Step 4: Simplify right side
    12,747.51x = 64,774,235.41
  5. Step 5: Solve for x
    x = 64,774,235.41/12,747.51
  6. Step 6: Final answer
    x = 5,081.32

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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.