Home / 20,786,654.20-31,179,981.30-13,133,903.80

Finding the Fourth Proportional to 20,786,654.20, 31,179,981.30 and 13,133,903.80

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Solution

The fourth proportional to 20,786,654.20, 31,179,981.30 and 13,133,903.80 is: 19,700,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,654.20 : 31,179,981.30 = 13,133,903.80 : x
  2. Step 2: Convert to fraction form
    20,786,654.20/31,179,981.30 = 13,133,903.80/x
  3. Step 3: Cross multiply
    20,786,654.20x = 31,179,981.30 × 13,133,903.80
  4. Step 4: Simplify right side
    20,786,654.20x = 409,514,874,879,999
  5. Step 5: Solve for x
    x = 409,514,874,879,999/20,786,654.20
  6. Step 6: Final answer
    x = 19,700,855.70

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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.