Home / 43,318.79-64,986.28-13,728.68

Finding the Fourth Proportional to 43,318.79, 64,986.28 and 13,728.68

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Solution

The fourth proportional to 43,318.79, 64,986.28 and 13,728.68 is: 20,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,318.79 : 64,986.28 = 13,728.68 : x
  2. Step 2: Convert to fraction form
    43,318.79/64,986.28 = 13,728.68/x
  3. Step 3: Cross multiply
    43,318.79x = 64,986.28 × 13,728.68
  4. Step 4: Simplify right side
    43,318.79x = 892,175,483.26
  5. Step 5: Solve for x
    x = 892,175,483.26/43,318.79
  6. Step 6: Final answer
    x = 20,595.58

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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.