Home / 20,867.63-28,797.32-11,436.19

Finding the Fourth Proportional to 20,867.63, 28,797.32 and 11,436.19

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Solution

The fourth proportional to 20,867.63, 28,797.32 and 11,436.19 is: 15,781.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.63 : 28,797.32 = 11,436.19 : x
  2. Step 2: Convert to fraction form
    20,867.63/28,797.32 = 11,436.19/x
  3. Step 3: Cross multiply
    20,867.63x = 28,797.32 × 11,436.19
  4. Step 4: Simplify right side
    20,867.63x = 329,331,579.61
  5. Step 5: Solve for x
    x = 329,331,579.61/20,867.63
  6. Step 6: Final answer
    x = 15,781.94

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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.