Home / 19,411.36-29,117.04-12,879.28

Finding the Fourth Proportional to 19,411.36, 29,117.04 and 12,879.28

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Solution

The fourth proportional to 19,411.36, 29,117.04 and 12,879.28 is: 19,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.36 : 29,117.04 = 12,879.28 : x
  2. Step 2: Convert to fraction form
    19,411.36/29,117.04 = 12,879.28/x
  3. Step 3: Cross multiply
    19,411.36x = 29,117.04 × 12,879.28
  4. Step 4: Simplify right side
    19,411.36x = 375,006,510.93
  5. Step 5: Solve for x
    x = 375,006,510.93/19,411.36
  6. Step 6: Final answer
    x = 19,318.92

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Similar ratio
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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.