Home / 13,151.19-19,721.93-5,355.75

Finding the Fourth Proportional to 13,151.19, 19,721.93 and 5,355.75

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Solution

The fourth proportional to 13,151.19, 19,721.93 and 5,355.75 is: 8,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.19 : 19,721.93 = 5,355.75 : x
  2. Step 2: Convert to fraction form
    13,151.19/19,721.93 = 5,355.75/x
  3. Step 3: Cross multiply
    13,151.19x = 19,721.93 × 5,355.75
  4. Step 4: Simplify right side
    13,151.19x = 105,625,699.82
  5. Step 5: Solve for x
    x = 105,625,699.82/13,151.19
  6. Step 6: Final answer
    x = 8,031.65

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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.