Home / 28,721.36-43,093.16-13,929.20

Finding the Fourth Proportional to 28,721.36, 43,093.16 and 13,929.20

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Solution

The fourth proportional to 28,721.36, 43,093.16 and 13,929.20 is: 20,899.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.36 : 43,093.16 = 13,929.20 : x
  2. Step 2: Convert to fraction form
    28,721.36/43,093.16 = 13,929.20/x
  3. Step 3: Cross multiply
    28,721.36x = 43,093.16 × 13,929.20
  4. Step 4: Simplify right side
    28,721.36x = 600,253,244.27
  5. Step 5: Solve for x
    x = 600,253,244.27/28,721.36
  6. Step 6: Final answer
    x = 20,899.19

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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.