Home / 20,415,161.16-28,172,907-11,247,803.91

Finding the Fourth Proportional to 20,415,161.16, 28,172,907 and 11,247,803.91

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Solution

The fourth proportional to 20,415,161.16, 28,172,907 and 11,247,803.91 is: 15,521,960.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415,161.16 : 28,172,907 = 11,247,803.91 : x
  2. Step 2: Convert to fraction form
    20,415,161.16/28,172,907 = 11,247,803.91/x
  3. Step 3: Cross multiply
    20,415,161.16x = 28,172,907 × 11,247,803.91
  4. Step 4: Simplify right side
    20,415,161.16x = 316,883,333,510,666.38
  5. Step 5: Solve for x
    x = 316,883,333,510,666.38/20,415,161.16
  6. Step 6: Final answer
    x = 15,521,960.91

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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.