Home / 21,288.28-31,928.76-6,089.80

Finding the Fourth Proportional to 21,288.28, 31,928.76 and 6,089.80

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Solution

The fourth proportional to 21,288.28, 31,928.76 and 6,089.80 is: 9,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.28 : 31,928.76 = 6,089.80 : x
  2. Step 2: Convert to fraction form
    21,288.28/31,928.76 = 6,089.80/x
  3. Step 3: Cross multiply
    21,288.28x = 31,928.76 × 6,089.80
  4. Step 4: Simplify right side
    21,288.28x = 194,439,762.65
  5. Step 5: Solve for x
    x = 194,439,762.65/21,288.28
  6. Step 6: Final answer
    x = 9,133.65

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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.