Home / 20,825.06-28,737.90-11,393.01

Finding the Fourth Proportional to 20,825.06, 28,737.90 and 11,393.01

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Solution

The fourth proportional to 20,825.06, 28,737.90 and 11,393.01 is: 15,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.06 : 28,737.90 = 11,393.01 : x
  2. Step 2: Convert to fraction form
    20,825.06/28,737.90 = 11,393.01/x
  3. Step 3: Cross multiply
    20,825.06x = 28,737.90 × 11,393.01
  4. Step 4: Simplify right side
    20,825.06x = 327,411,182.08
  5. Step 5: Solve for x
    x = 327,411,182.08/20,825.06
  6. Step 6: Final answer
    x = 15,721.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.