Home / 21,378.06-32,066.97-7,347.90

Finding the Fourth Proportional to 21,378.06, 32,066.97 and 7,347.90

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Solution

The fourth proportional to 21,378.06, 32,066.97 and 7,347.90 is: 11,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.06 : 32,066.97 = 7,347.90 : x
  2. Step 2: Convert to fraction form
    21,378.06/32,066.97 = 7,347.90/x
  3. Step 3: Cross multiply
    21,378.06x = 32,066.97 × 7,347.90
  4. Step 4: Simplify right side
    21,378.06x = 235,624,888.86
  5. Step 5: Solve for x
    x = 235,624,888.86/21,378.06
  6. Step 6: Final answer
    x = 11,021.81

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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.