Home / 20,722,387.40-31,111,574.70-13,164,115.40

Finding the Fourth Proportional to 20,722,387.40, 31,111,574.70 and 13,164,115.40

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Solution

The fourth proportional to 20,722,387.40, 31,111,574.70 and 13,164,115.40 is: 19,763,956.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,387.40 : 31,111,574.70 = 13,164,115.40 : x
  2. Step 2: Convert to fraction form
    20,722,387.40/31,111,574.70 = 13,164,115.40/x
  3. Step 3: Cross multiply
    20,722,387.40x = 31,111,574.70 × 13,164,115.40
  4. Step 4: Simplify right side
    20,722,387.40x = 409,556,359,626,520.38
  5. Step 5: Solve for x
    x = 409,556,359,626,520.38/20,722,387.40
  6. Step 6: Final answer
    x = 19,763,956.33

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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.