Home / 28,145.72-42,215.34-11,494.28

Finding the Fourth Proportional to 28,145.72, 42,215.34 and 11,494.28

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Solution

The fourth proportional to 28,145.72, 42,215.34 and 11,494.28 is: 17,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.72 : 42,215.34 = 11,494.28 : x
  2. Step 2: Convert to fraction form
    28,145.72/42,215.34 = 11,494.28/x
  3. Step 3: Cross multiply
    28,145.72x = 42,215.34 × 11,494.28
  4. Step 4: Simplify right side
    28,145.72x = 485,234,938.26
  5. Step 5: Solve for x
    x = 485,234,938.26/28,145.72
  6. Step 6: Final answer
    x = 17,240.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.