Home / 22,145.13-30,558.75-12,456.05

Finding the Fourth Proportional to 22,145.13, 30,558.75 and 12,456.05

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Solution

The fourth proportional to 22,145.13, 30,558.75 and 12,456.05 is: 17,188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,145.13 : 30,558.75 = 12,456.05 : x
  2. Step 2: Convert to fraction form
    22,145.13/30,558.75 = 12,456.05/x
  3. Step 3: Cross multiply
    22,145.13x = 30,558.75 × 12,456.05
  4. Step 4: Simplify right side
    22,145.13x = 380,641,165.14
  5. Step 5: Solve for x
    x = 380,641,165.14/22,145.13
  6. Step 6: Final answer
    x = 17,188.48

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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.