Home / 20,734,581.90-31,101,872.85-13,166,978.70

Finding the Fourth Proportional to 20,734,581.90, 31,101,872.85 and 13,166,978.70

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Solution

The fourth proportional to 20,734,581.90, 31,101,872.85 and 13,166,978.70 is: 19,750,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734,581.90 : 31,101,872.85 = 13,166,978.70 : x
  2. Step 2: Convert to fraction form
    20,734,581.90/31,101,872.85 = 13,166,978.70/x
  3. Step 3: Cross multiply
    20,734,581.90x = 31,101,872.85 × 13,166,978.70
  4. Step 4: Simplify right side
    20,734,581.90x = 409,517,697,346,058.31
  5. Step 5: Solve for x
    x = 409,517,697,346,058.31/20,734,581.90
  6. Step 6: Final answer
    x = 19,750,468.05

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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.