Home / 13,287.01-19,931.66-3,426.20

Finding the Fourth Proportional to 13,287.01, 19,931.66 and 3,426.20

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Solution

The fourth proportional to 13,287.01, 19,931.66 and 3,426.20 is: 5,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.01 : 19,931.66 = 3,426.20 : x
  2. Step 2: Convert to fraction form
    13,287.01/19,931.66 = 3,426.20/x
  3. Step 3: Cross multiply
    13,287.01x = 19,931.66 × 3,426.20
  4. Step 4: Simplify right side
    13,287.01x = 68,289,853.49
  5. Step 5: Solve for x
    x = 68,289,853.49/13,287.01
  6. Step 6: Final answer
    x = 5,139.60

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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.