Home / 12,660.04-18,987.82-3,426.76

Finding the Fourth Proportional to 12,660.04, 18,987.82 and 3,426.76

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Solution

The fourth proportional to 12,660.04, 18,987.82 and 3,426.76 is: 5,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.04 : 18,987.82 = 3,426.76 : x
  2. Step 2: Convert to fraction form
    12,660.04/18,987.82 = 3,426.76/x
  3. Step 3: Cross multiply
    12,660.04x = 18,987.82 × 3,426.76
  4. Step 4: Simplify right side
    12,660.04x = 65,066,702.06
  5. Step 5: Solve for x
    x = 65,066,702.06/12,660.04
  6. Step 6: Final answer
    x = 5,139.53

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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.