Home / 18,926,428.44-28,389,870.38-5,278,743.82

Finding the Fourth Proportional to 18,926,428.44, 28,389,870.38 and 5,278,743.82

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Solution

The fourth proportional to 18,926,428.44, 28,389,870.38 and 5,278,743.82 is: 7,918,179.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926,428.44 : 28,389,870.38 = 5,278,743.82 : x
  2. Step 2: Convert to fraction form
    18,926,428.44/28,389,870.38 = 5,278,743.82/x
  3. Step 3: Cross multiply
    18,926,428.44x = 28,389,870.38 × 5,278,743.82
  4. Step 4: Simplify right side
    18,926,428.44x = 149,862,852,819,026.06
  5. Step 5: Solve for x
    x = 149,862,852,819,026.06/18,926,428.44
  6. Step 6: Final answer
    x = 7,918,179.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.