Home / 20,678,857.70-31,018,286.55-5,326,117.70

Finding the Fourth Proportional to 20,678,857.70, 31,018,286.55 and 5,326,117.70

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Solution

The fourth proportional to 20,678,857.70, 31,018,286.55 and 5,326,117.70 is: 7,989,176.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,857.70 : 31,018,286.55 = 5,326,117.70 : x
  2. Step 2: Convert to fraction form
    20,678,857.70/31,018,286.55 = 5,326,117.70/x
  3. Step 3: Cross multiply
    20,678,857.70x = 31,018,286.55 × 5,326,117.70
  4. Step 4: Simplify right side
    20,678,857.70x = 165,207,045,017,626.94
  5. Step 5: Solve for x
    x = 165,207,045,017,626.94/20,678,857.70
  6. Step 6: Final answer
    x = 7,989,176.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.