Home / 20,502,854.40-30,733,286.40-11,978,803.20

Finding the Fourth Proportional to 20,502,854.40, 30,733,286.40 and 11,978,803.20

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Solution

The fourth proportional to 20,502,854.40, 30,733,286.40 and 11,978,803.20 is: 17,955,938.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502,854.40 : 30,733,286.40 = 11,978,803.20 : x
  2. Step 2: Convert to fraction form
    20,502,854.40/30,733,286.40 = 11,978,803.20/x
  3. Step 3: Cross multiply
    20,502,854.40x = 30,733,286.40 × 11,978,803.20
  4. Step 4: Simplify right side
    20,502,854.40x = 368,147,989,474,836.44
  5. Step 5: Solve for x
    x = 368,147,989,474,836.44/20,502,854.40
  6. Step 6: Final answer
    x = 17,955,938.34

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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.