Home / 13,558.74-18,703.89-7,966.50

Finding the Fourth Proportional to 13,558.74, 18,703.89 and 7,966.50

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Solution

The fourth proportional to 13,558.74, 18,703.89 and 7,966.50 is: 10,989.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.74 : 18,703.89 = 7,966.50 : x
  2. Step 2: Convert to fraction form
    13,558.74/18,703.89 = 7,966.50/x
  3. Step 3: Cross multiply
    13,558.74x = 18,703.89 × 7,966.50
  4. Step 4: Simplify right side
    13,558.74x = 149,004,539.69
  5. Step 5: Solve for x
    x = 149,004,539.69/13,558.74
  6. Step 6: Final answer
    x = 10,989.56

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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.