Home / 15,742,369-21,717,046.72-9,211,992.44

Finding the Fourth Proportional to 15,742,369, 21,717,046.72 and 9,211,992.44

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Solution

The fourth proportional to 15,742,369, 21,717,046.72 and 9,211,992.44 is: 12,708,206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742,369 : 21,717,046.72 = 9,211,992.44 : x
  2. Step 2: Convert to fraction form
    15,742,369/21,717,046.72 = 9,211,992.44/x
  3. Step 3: Cross multiply
    15,742,369x = 21,717,046.72 × 9,211,992.44
  4. Step 4: Simplify right side
    15,742,369x = 200,057,270,203,766.78
  5. Step 5: Solve for x
    x = 200,057,270,203,766.78/15,742,369
  6. Step 6: Final answer
    x = 12,708,206.13

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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.