Home / 19,411.90-29,121.63-7,726.30

Finding the Fourth Proportional to 19,411.90, 29,121.63 and 7,726.30

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Solution

The fourth proportional to 19,411.90, 29,121.63 and 7,726.30 is: 11,590.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.90 : 29,121.63 = 7,726.30 : x
  2. Step 2: Convert to fraction form
    19,411.90/29,121.63 = 7,726.30/x
  3. Step 3: Cross multiply
    19,411.90x = 29,121.63 × 7,726.30
  4. Step 4: Simplify right side
    19,411.90x = 225,002,449.87
  5. Step 5: Solve for x
    x = 225,002,449.87/19,411.90
  6. Step 6: Final answer
    x = 11,590.95

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1.5x scale

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.