Home / 20,958,635.10-31,374,967.05-12,434,583.90

Finding the Fourth Proportional to 20,958,635.10, 31,374,967.05 and 12,434,583.90

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Solution

The fourth proportional to 20,958,635.10, 31,374,967.05 and 12,434,583.90 is: 18,614,507.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,635.10 : 31,374,967.05 = 12,434,583.90 : x
  2. Step 2: Convert to fraction form
    20,958,635.10/31,374,967.05 = 12,434,583.90/x
  3. Step 3: Cross multiply
    20,958,635.10x = 31,374,967.05 × 12,434,583.90
  4. Step 4: Simplify right side
    20,958,635.10x = 390,134,660,142,960.50
  5. Step 5: Solve for x
    x = 390,134,660,142,960.50/20,958,635.10
  6. Step 6: Final answer
    x = 18,614,507.02

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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.