Home / 20,724.06-28,608.75-12,223.29

Finding the Fourth Proportional to 20,724.06, 28,608.75 and 12,223.29

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Solution

The fourth proportional to 20,724.06, 28,608.75 and 12,223.29 is: 16,873.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.06 : 28,608.75 = 12,223.29 : x
  2. Step 2: Convert to fraction form
    20,724.06/28,608.75 = 12,223.29/x
  3. Step 3: Cross multiply
    20,724.06x = 28,608.75 × 12,223.29
  4. Step 4: Simplify right side
    20,724.06x = 349,693,047.79
  5. Step 5: Solve for x
    x = 349,693,047.79/20,724.06
  6. Step 6: Final answer
    x = 16,873.77

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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.