Home / 15,686,448.46-21,647,823.96-8,717,419.78

Finding the Fourth Proportional to 15,686,448.46, 21,647,823.96 and 8,717,419.78

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Solution

The fourth proportional to 15,686,448.46, 21,647,823.96 and 8,717,419.78 is: 12,030,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,448.46 : 21,647,823.96 = 8,717,419.78 : x
  2. Step 2: Convert to fraction form
    15,686,448.46/21,647,823.96 = 8,717,419.78/x
  3. Step 3: Cross multiply
    15,686,448.46x = 21,647,823.96 × 8,717,419.78
  4. Step 4: Simplify right side
    15,686,448.46x = 188,713,168,782,861.94
  5. Step 5: Solve for x
    x = 188,713,168,782,861.94/15,686,448.46
  6. Step 6: Final answer
    x = 12,030,331.10

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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.