Home / 13,639,218.78-18,822,029.31-7,527,647.28

Finding the Fourth Proportional to 13,639,218.78, 18,822,029.31 and 7,527,647.28

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Solution

The fourth proportional to 13,639,218.78, 18,822,029.31 and 7,527,647.28 is: 10,388,102.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639,218.78 : 18,822,029.31 = 7,527,647.28 : x
  2. Step 2: Convert to fraction form
    13,639,218.78/18,822,029.31 = 7,527,647.28/x
  3. Step 3: Cross multiply
    13,639,218.78x = 18,822,029.31 × 7,527,647.28
  4. Step 4: Simplify right side
    13,639,218.78x = 141,685,597,739,501.78
  5. Step 5: Solve for x
    x = 141,685,597,739,501.78/13,639,218.78
  6. Step 6: Final answer
    x = 10,388,102.14

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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.