Home / 20,239.24-27,928.02-11,285.05

Finding the Fourth Proportional to 20,239.24, 27,928.02 and 11,285.05

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Solution

The fourth proportional to 20,239.24, 27,928.02 and 11,285.05 is: 15,572.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.24 : 27,928.02 = 11,285.05 : x
  2. Step 2: Convert to fraction form
    20,239.24/27,928.02 = 11,285.05/x
  3. Step 3: Cross multiply
    20,239.24x = 27,928.02 × 11,285.05
  4. Step 4: Simplify right side
    20,239.24x = 315,169,102.10
  5. Step 5: Solve for x
    x = 315,169,102.10/20,239.24
  6. Step 6: Final answer
    x = 15,572.18

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1.5x scale

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.