Home / 20,762,241.90-31,134,031.65-7,978,497.90

Finding the Fourth Proportional to 20,762,241.90, 31,134,031.65 and 7,978,497.90

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Solution

The fourth proportional to 20,762,241.90, 31,134,031.65 and 7,978,497.90 is: 11,964,161.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,241.90 : 31,134,031.65 = 7,978,497.90 : x
  2. Step 2: Convert to fraction form
    20,762,241.90/31,134,031.65 = 7,978,497.90/x
  3. Step 3: Cross multiply
    20,762,241.90x = 31,134,031.65 × 7,978,497.90
  4. Step 4: Simplify right side
    20,762,241.90x = 248,402,806,138,058.53
  5. Step 5: Solve for x
    x = 248,402,806,138,058.53/20,762,241.90
  6. Step 6: Final answer
    x = 11,964,161.06

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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.