Home / 22,135.13-30,542.90-13,182.40

Finding the Fourth Proportional to 22,135.13, 30,542.90 and 13,182.40

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Solution

The fourth proportional to 22,135.13, 30,542.90 and 13,182.40 is: 18,189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,135.13 : 30,542.90 = 13,182.40 : x
  2. Step 2: Convert to fraction form
    22,135.13/30,542.90 = 13,182.40/x
  3. Step 3: Cross multiply
    22,135.13x = 30,542.90 × 13,182.40
  4. Step 4: Simplify right side
    22,135.13x = 402,628,724.96
  5. Step 5: Solve for x
    x = 402,628,724.96/22,135.13
  6. Step 6: Final answer
    x = 18,189.58

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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.