Home / 43,281.40-64,923.72-12,115.84

Finding the Fourth Proportional to 43,281.40, 64,923.72 and 12,115.84

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Solution

The fourth proportional to 43,281.40, 64,923.72 and 12,115.84 is: 18,174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,281.40 : 64,923.72 = 12,115.84 : x
  2. Step 2: Convert to fraction form
    43,281.40/64,923.72 = 12,115.84/x
  3. Step 3: Cross multiply
    43,281.40x = 64,923.72 × 12,115.84
  4. Step 4: Simplify right side
    43,281.40x = 786,605,403.72
  5. Step 5: Solve for x
    x = 786,605,403.72/43,281.40
  6. Step 6: Final answer
    x = 18,174.21

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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.