Home / 12,866.40-19,301.76-4,100.64

Finding the Fourth Proportional to 12,866.40, 19,301.76 and 4,100.64

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Solution

The fourth proportional to 12,866.40, 19,301.76 and 4,100.64 is: 6,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.40 : 19,301.76 = 4,100.64 : x
  2. Step 2: Convert to fraction form
    12,866.40/19,301.76 = 4,100.64/x
  3. Step 3: Cross multiply
    12,866.40x = 19,301.76 × 4,100.64
  4. Step 4: Simplify right side
    12,866.40x = 79,149,569.13
  5. Step 5: Solve for x
    x = 79,149,569.13/12,866.40
  6. Step 6: Final answer
    x = 6,151.65

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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.