Home / 20,842,305.96-28,763,977.86-13,113,972.84

Finding the Fourth Proportional to 20,842,305.96, 28,763,977.86 and 13,113,972.84

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Solution

The fourth proportional to 20,842,305.96, 28,763,977.86 and 13,113,972.84 is: 18,098,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842,305.96 : 28,763,977.86 = 13,113,972.84 : x
  2. Step 2: Convert to fraction form
    20,842,305.96/28,763,977.86 = 13,113,972.84/x
  3. Step 3: Cross multiply
    20,842,305.96x = 28,763,977.86 × 13,113,972.84
  4. Step 4: Simplify right side
    20,842,305.96x = 377,210,024,426,401.31
  5. Step 5: Solve for x
    x = 377,210,024,426,401.31/20,842,305.96
  6. Step 6: Final answer
    x = 18,098,286.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.