Home / 13,151.13-19,726.71-3,290.40

Finding the Fourth Proportional to 13,151.13, 19,726.71 and 3,290.40

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Solution

The fourth proportional to 13,151.13, 19,726.71 and 3,290.40 is: 4,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.13 : 19,726.71 = 3,290.40 : x
  2. Step 2: Convert to fraction form
    13,151.13/19,726.71 = 3,290.40/x
  3. Step 3: Cross multiply
    13,151.13x = 19,726.71 × 3,290.40
  4. Step 4: Simplify right side
    13,151.13x = 64,908,766.58
  5. Step 5: Solve for x
    x = 64,908,766.58/13,151.13
  6. Step 6: Final answer
    x = 4,935.60

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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.