Home / 19,439.39-29,163.71-6,291.76

Finding the Fourth Proportional to 19,439.39, 29,163.71 and 6,291.76

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Solution

The fourth proportional to 19,439.39, 29,163.71 and 6,291.76 is: 9,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,439.39 : 29,163.71 = 6,291.76 : x
  2. Step 2: Convert to fraction form
    19,439.39/29,163.71 = 6,291.76/x
  3. Step 3: Cross multiply
    19,439.39x = 29,163.71 × 6,291.76
  4. Step 4: Simplify right side
    19,439.39x = 183,490,886.75
  5. Step 5: Solve for x
    x = 183,490,886.75/19,439.39
  6. Step 6: Final answer
    x = 9,439.13

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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.