Home / 12,922,218.80-17,832,779.92-7,121,208.72

Finding the Fourth Proportional to 12,922,218.80, 17,832,779.92 and 7,121,208.72

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Solution

The fourth proportional to 12,922,218.80, 17,832,779.92 and 7,121,208.72 is: 9,827,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922,218.80 : 17,832,779.92 = 7,121,208.72 : x
  2. Step 2: Convert to fraction form
    12,922,218.80/17,832,779.92 = 7,121,208.72/x
  3. Step 3: Cross multiply
    12,922,218.80x = 17,832,779.92 × 7,121,208.72
  4. Step 4: Simplify right side
    12,922,218.80x = 126,990,947,868,144.91
  5. Step 5: Solve for x
    x = 126,990,947,868,144.91/12,922,218.80
  6. Step 6: Final answer
    x = 9,827,333.05

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1.5x scale

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.