Home / 13,558,542.86-18,711,154.56-7,977,178.98

Finding the Fourth Proportional to 13,558,542.86, 18,711,154.56 and 7,977,178.98

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Solution

The fourth proportional to 13,558,542.86, 18,711,154.56 and 7,977,178.98 is: 11,008,721.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558,542.86 : 18,711,154.56 = 7,977,178.98 : x
  2. Step 2: Convert to fraction form
    13,558,542.86/18,711,154.56 = 7,977,178.98/x
  3. Step 3: Cross multiply
    13,558,542.86x = 18,711,154.56 × 7,977,178.98
  4. Step 4: Simplify right side
    13,558,542.86x = 149,262,228,847,563.16
  5. Step 5: Solve for x
    x = 149,262,228,847,563.16/13,558,542.86
  6. Step 6: Final answer
    x = 11,008,721.99

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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.