Home / 20,762,304.90-31,134,126.15-7,978,560.90

Finding the Fourth Proportional to 20,762,304.90, 31,134,126.15 and 7,978,560.90

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Solution

The fourth proportional to 20,762,304.90, 31,134,126.15 and 7,978,560.90 is: 11,964,255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,304.90 : 31,134,126.15 = 7,978,560.90 : x
  2. Step 2: Convert to fraction form
    20,762,304.90/31,134,126.15 = 7,978,560.90/x
  3. Step 3: Cross multiply
    20,762,304.90x = 31,134,126.15 × 7,978,560.90
  4. Step 4: Simplify right side
    20,762,304.90x = 248,405,521,556,057.53
  5. Step 5: Solve for x
    x = 248,405,521,556,057.53/20,762,304.90
  6. Step 6: Final answer
    x = 11,964,255.55

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1.5x scale

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.