Home / 43,154.68-64,732.80-11,989.96

Finding the Fourth Proportional to 43,154.68, 64,732.80 and 11,989.96

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Solution

The fourth proportional to 43,154.68, 64,732.80 and 11,989.96 is: 17,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,154.68 : 64,732.80 = 11,989.96 : x
  2. Step 2: Convert to fraction form
    43,154.68/64,732.80 = 11,989.96/x
  3. Step 3: Cross multiply
    43,154.68x = 64,732.80 × 11,989.96
  4. Step 4: Simplify right side
    43,154.68x = 776,143,682.69
  5. Step 5: Solve for x
    x = 776,143,682.69/43,154.68
  6. Step 6: Final answer
    x = 17,985.16

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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.