Home / 12,921,705.80-17,832,073.60-7,120,695.14

Finding the Fourth Proportional to 12,921,705.80, 17,832,073.60 and 7,120,695.14

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Solution

The fourth proportional to 12,921,705.80, 17,832,073.60 and 7,120,695.14 is: 9,826,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,705.80 : 17,832,073.60 = 7,120,695.14 : x
  2. Step 2: Convert to fraction form
    12,921,705.80/17,832,073.60 = 7,120,695.14/x
  3. Step 3: Cross multiply
    12,921,705.80x = 17,832,073.60 × 7,120,695.14
  4. Step 4: Simplify right side
    12,921,705.80x = 126,976,759,819,642.31
  5. Step 5: Solve for x
    x = 126,976,759,819,642.31/12,921,705.80
  6. Step 6: Final answer
    x = 9,826,625.20

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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.