Home / 20,952,072.70-31,404,781.05-8,168,328.70

Finding the Fourth Proportional to 20,952,072.70, 31,404,781.05 and 8,168,328.70

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Solution

The fourth proportional to 20,952,072.70, 31,404,781.05 and 8,168,328.70 is: 12,243,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952,072.70 : 31,404,781.05 = 8,168,328.70 : x
  2. Step 2: Convert to fraction form
    20,952,072.70/31,404,781.05 = 8,168,328.70/x
  3. Step 3: Cross multiply
    20,952,072.70x = 31,404,781.05 × 8,168,328.70
  4. Step 4: Simplify right side
    20,952,072.70x = 256,524,574,367,931.16
  5. Step 5: Solve for x
    x = 256,524,574,367,931.16/20,952,072.70
  6. Step 6: Final answer
    x = 12,243,398.45

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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.