Home / 21,571.65-32,357.45-6,781.86

Finding the Fourth Proportional to 21,571.65, 32,357.45 and 6,781.86

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Solution

The fourth proportional to 21,571.65, 32,357.45 and 6,781.86 is: 10,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.65 : 32,357.45 = 6,781.86 : x
  2. Step 2: Convert to fraction form
    21,571.65/32,357.45 = 6,781.86/x
  3. Step 3: Cross multiply
    21,571.65x = 32,357.45 × 6,781.86
  4. Step 4: Simplify right side
    21,571.65x = 219,443,712.81
  5. Step 5: Solve for x
    x = 219,443,712.81/21,571.65
  6. Step 6: Final answer
    x = 10,172.78

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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.