Home / 22,480.44-30,998.70-15,315

Finding the Fourth Proportional to 22,480.44, 30,998.70 and 15,315

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Solution

The fourth proportional to 22,480.44, 30,998.70 and 15,315 is: 21,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,480.44 : 30,998.70 = 15,315 : x
  2. Step 2: Convert to fraction form
    22,480.44/30,998.70 = 15,315/x
  3. Step 3: Cross multiply
    22,480.44x = 30,998.70 × 15,315
  4. Step 4: Simplify right side
    22,480.44x = 474,745,090.50
  5. Step 5: Solve for x
    x = 474,745,090.50/22,480.44
  6. Step 6: Final answer
    x = 21,118.14

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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.