Home / 12,921,699.32-17,832,064.64-7,120,688.65

Finding the Fourth Proportional to 12,921,699.32, 17,832,064.64 and 7,120,688.65

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Solution

The fourth proportional to 12,921,699.32, 17,832,064.64 and 7,120,688.65 is: 9,826,616.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,699.32 : 17,832,064.64 = 7,120,688.65 : x
  2. Step 2: Convert to fraction form
    12,921,699.32/17,832,064.64 = 7,120,688.65/x
  3. Step 3: Cross multiply
    12,921,699.32x = 17,832,064.64 × 7,120,688.65
  4. Step 4: Simplify right side
    12,921,699.32x = 126,976,580,207,930.73
  5. Step 5: Solve for x
    x = 126,976,580,207,930.73/12,921,699.32
  6. Step 6: Final answer
    x = 9,826,616.23

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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.