Home / 20,762,282.40-31,134,092.40-7,978,538.40

Finding the Fourth Proportional to 20,762,282.40, 31,134,092.40 and 7,978,538.40

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Solution

The fourth proportional to 20,762,282.40, 31,134,092.40 and 7,978,538.40 is: 11,964,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,282.40 : 31,134,092.40 = 7,978,538.40 : x
  2. Step 2: Convert to fraction form
    20,762,282.40/31,134,092.40 = 7,978,538.40/x
  3. Step 3: Cross multiply
    20,762,282.40x = 31,134,092.40 × 7,978,538.40
  4. Step 4: Simplify right side
    20,762,282.40x = 248,404,551,762,548.16
  5. Step 5: Solve for x
    x = 248,404,551,762,548.16/20,762,282.40
  6. Step 6: Final answer
    x = 11,964,221.80

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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.