Home / 12,921,703.81-17,832,070.85-7,120,693.15

Finding the Fourth Proportional to 12,921,703.81, 17,832,070.85 and 7,120,693.15

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Solution

The fourth proportional to 12,921,703.81, 17,832,070.85 and 7,120,693.15 is: 9,826,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,703.81 : 17,832,070.85 = 7,120,693.15 : x
  2. Step 2: Convert to fraction form
    12,921,703.81/17,832,070.85 = 7,120,693.15/x
  3. Step 3: Cross multiply
    12,921,703.81x = 17,832,070.85 × 7,120,693.15
  4. Step 4: Simplify right side
    12,921,703.81x = 126,976,704,671,726.03
  5. Step 5: Solve for x
    x = 126,976,704,671,726.03/12,921,703.81
  6. Step 6: Final answer
    x = 9,826,622.45

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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.