Home / 12,922,979.91-17,833,712.63-7,121,761.65

Finding the Fourth Proportional to 12,922,979.91, 17,833,712.63 and 7,121,761.65

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Solution

The fourth proportional to 12,922,979.91, 17,833,712.63 and 7,121,761.65 is: 9,828,031.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922,979.91 : 17,833,712.63 = 7,121,761.65 : x
  2. Step 2: Convert to fraction form
    12,922,979.91/17,833,712.63 = 7,121,761.65/x
  3. Step 3: Cross multiply
    12,922,979.91x = 17,833,712.63 × 7,121,761.65
  4. Step 4: Simplify right side
    12,922,979.91x = 127,007,450,685,454.64
  5. Step 5: Solve for x
    x = 127,007,450,685,454.64/12,922,979.91
  6. Step 6: Final answer
    x = 9,828,031.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.