Home / 12,999,365.70-17,938,904.96-7,198,022.89

Finding the Fourth Proportional to 12,999,365.70, 17,938,904.96 and 7,198,022.89

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Solution

The fourth proportional to 12,999,365.70, 17,938,904.96 and 7,198,022.89 is: 9,933,149.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,365.70 : 17,938,904.96 = 7,198,022.89 : x
  2. Step 2: Convert to fraction form
    12,999,365.70/17,938,904.96 = 7,198,022.89/x
  3. Step 3: Cross multiply
    12,999,365.70x = 17,938,904.96 × 7,198,022.89
  4. Step 4: Simplify right side
    12,999,365.70x = 129,124,648,442,777.14
  5. Step 5: Solve for x
    x = 129,124,648,442,777.14/12,999,365.70
  6. Step 6: Final answer
    x = 9,933,149.93

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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.