Home / 20,911,704.40-31,325,566.20-11,925,758.80

Finding the Fourth Proportional to 20,911,704.40, 31,325,566.20 and 11,925,758.80

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Solution

The fourth proportional to 20,911,704.40, 31,325,566.20 and 11,925,758.80 is: 17,864,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911,704.40 : 31,325,566.20 = 11,925,758.80 : x
  2. Step 2: Convert to fraction form
    20,911,704.40/31,325,566.20 = 11,925,758.80/x
  3. Step 3: Cross multiply
    20,911,704.40x = 31,325,566.20 × 11,925,758.80
  4. Step 4: Simplify right side
    20,911,704.40x = 373,581,146,774,632.56
  5. Step 5: Solve for x
    x = 373,581,146,774,632.56/20,911,704.40
  6. Step 6: Final answer
    x = 17,864,691.45

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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.