Home / 21,344,221.69-29,455,019.70-11,554,658.62

Finding the Fourth Proportional to 21,344,221.69, 29,455,019.70 and 11,554,658.62

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Solution

The fourth proportional to 21,344,221.69, 29,455,019.70 and 11,554,658.62 is: 15,945,425.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344,221.69 : 29,455,019.70 = 11,554,658.62 : x
  2. Step 2: Convert to fraction form
    21,344,221.69/29,455,019.70 = 11,554,658.62/x
  3. Step 3: Cross multiply
    21,344,221.69x = 29,455,019.70 × 11,554,658.62
  4. Step 4: Simplify right side
    21,344,221.69x = 340,342,697,278,874.81
  5. Step 5: Solve for x
    x = 340,342,697,278,874.81/21,344,221.69
  6. Step 6: Final answer
    x = 15,945,425.52

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Double scale
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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.