Home / 28,722.88-43,073.28-11,190.40

Finding the Fourth Proportional to 28,722.88, 43,073.28 and 11,190.40

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Solution

The fourth proportional to 28,722.88, 43,073.28 and 11,190.40 is: 16,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.88 : 43,073.28 = 11,190.40 : x
  2. Step 2: Convert to fraction form
    28,722.88/43,073.28 = 11,190.40/x
  3. Step 3: Cross multiply
    28,722.88x = 43,073.28 × 11,190.40
  4. Step 4: Simplify right side
    28,722.88x = 482,007,232.51
  5. Step 5: Solve for x
    x = 482,007,232.51/28,722.88
  6. Step 6: Final answer
    x = 16,781.30

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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.