Home / 20,760,292.32-31,141,286.88-7,122,816.48

Finding the Fourth Proportional to 20,760,292.32, 31,141,286.88 and 7,122,816.48

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Solution

The fourth proportional to 20,760,292.32, 31,141,286.88 and 7,122,816.48 is: 10,684,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760,292.32 : 31,141,286.88 = 7,122,816.48 : x
  2. Step 2: Convert to fraction form
    20,760,292.32/31,141,286.88 = 7,122,816.48/x
  3. Step 3: Cross multiply
    20,760,292.32x = 31,141,286.88 × 7,122,816.48
  4. Step 4: Simplify right side
    20,760,292.32x = 221,813,671,397,271.78
  5. Step 5: Solve for x
    x = 221,813,671,397,271.78/20,760,292.32
  6. Step 6: Final answer
    x = 10,684,515.80

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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.