Home / 12,999,778.80-17,939,475.96-7,198,435.92

Finding the Fourth Proportional to 12,999,778.80, 17,939,475.96 and 7,198,435.92

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Solution

The fourth proportional to 12,999,778.80, 17,939,475.96 and 7,198,435.92 is: 9,933,720.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,778.80 : 17,939,475.96 = 7,198,435.92 : x
  2. Step 2: Convert to fraction form
    12,999,778.80/17,939,475.96 = 7,198,435.92/x
  3. Step 3: Cross multiply
    12,999,778.80x = 17,939,475.96 × 7,198,435.92
  4. Step 4: Simplify right side
    12,999,778.80x = 129,136,168,136,440.48
  5. Step 5: Solve for x
    x = 129,136,168,136,440.48/12,999,778.80
  6. Step 6: Final answer
    x = 9,933,720.42

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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.