Home / 28,212.03-42,320.70-7,948.71

Finding the Fourth Proportional to 28,212.03, 42,320.70 and 7,948.71

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Solution

The fourth proportional to 28,212.03, 42,320.70 and 7,948.71 is: 11,923.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.03 : 42,320.70 = 7,948.71 : x
  2. Step 2: Convert to fraction form
    28,212.03/42,320.70 = 7,948.71/x
  3. Step 3: Cross multiply
    28,212.03x = 42,320.70 × 7,948.71
  4. Step 4: Simplify right side
    28,212.03x = 336,394,971.30
  5. Step 5: Solve for x
    x = 336,394,971.30/28,212.03
  6. Step 6: Final answer
    x = 11,923.81

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1.5x scale

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.