Home / 20,833.56-31,250.28-8,521.56

Finding the Fourth Proportional to 20,833.56, 31,250.28 and 8,521.56

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Solution

The fourth proportional to 20,833.56, 31,250.28 and 8,521.56 is: 12,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.56 : 31,250.28 = 8,521.56 : x
  2. Step 2: Convert to fraction form
    20,833.56/31,250.28 = 8,521.56/x
  3. Step 3: Cross multiply
    20,833.56x = 31,250.28 × 8,521.56
  4. Step 4: Simplify right side
    20,833.56x = 266,301,136.04
  5. Step 5: Solve for x
    x = 266,301,136.04/20,833.56
  6. Step 6: Final answer
    x = 12,782.32

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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.