Home / 20,240.24-27,931.69-11,288.32

Finding the Fourth Proportional to 20,240.24, 27,931.69 and 11,288.32

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Solution

The fourth proportional to 20,240.24, 27,931.69 and 11,288.32 is: 15,577.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240.24 : 27,931.69 = 11,288.32 : x
  2. Step 2: Convert to fraction form
    20,240.24/27,931.69 = 11,288.32/x
  3. Step 3: Cross multiply
    20,240.24x = 27,931.69 × 11,288.32
  4. Step 4: Simplify right side
    20,240.24x = 315,301,854.86
  5. Step 5: Solve for x
    x = 315,301,854.86/20,240.24
  6. Step 6: Final answer
    x = 15,577.97

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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.