Home / 22,231.80-30,680.87-12,803.40

Finding the Fourth Proportional to 22,231.80, 30,680.87 and 12,803.40

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Solution

The fourth proportional to 22,231.80, 30,680.87 and 12,803.40 is: 17,669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,231.80 : 30,680.87 = 12,803.40 : x
  2. Step 2: Convert to fraction form
    22,231.80/30,680.87 = 12,803.40/x
  3. Step 3: Cross multiply
    22,231.80x = 30,680.87 × 12,803.40
  4. Step 4: Simplify right side
    22,231.80x = 392,819,386.94
  5. Step 5: Solve for x
    x = 392,819,386.94/22,231.80
  6. Step 6: Final answer
    x = 17,669.26

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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.