Home / 12,900,555.74-17,802,769.47-7,099,337.49

Finding the Fourth Proportional to 12,900,555.74, 17,802,769.47 and 7,099,337.49

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Solution

The fourth proportional to 12,900,555.74, 17,802,769.47 and 7,099,337.49 is: 9,797,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900,555.74 : 17,802,769.47 = 7,099,337.49 : x
  2. Step 2: Convert to fraction form
    12,900,555.74/17,802,769.47 = 7,099,337.49/x
  3. Step 3: Cross multiply
    12,900,555.74x = 17,802,769.47 × 7,099,337.49
  4. Step 4: Simplify right side
    12,900,555.74x = 126,387,868,724,198.42
  5. Step 5: Solve for x
    x = 126,387,868,724,198.42/12,900,555.74
  6. Step 6: Final answer
    x = 9,797,087.14

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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.