Home / 19,461.13-29,147.91-13,643.71

Finding the Fourth Proportional to 19,461.13, 29,147.91 and 13,643.71

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Solution

The fourth proportional to 19,461.13, 29,147.91 and 13,643.71 is: 20,434.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,461.13 : 29,147.91 = 13,643.71 : x
  2. Step 2: Convert to fraction form
    19,461.13/29,147.91 = 13,643.71/x
  3. Step 3: Cross multiply
    19,461.13x = 29,147.91 × 13,643.71
  4. Step 4: Simplify right side
    19,461.13x = 397,685,631.15
  5. Step 5: Solve for x
    x = 397,685,631.15/19,461.13
  6. Step 6: Final answer
    x = 20,434.87

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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.