Home / 28,436.51-42,619.13-21,887.39

Finding the Fourth Proportional to 28,436.51, 42,619.13 and 21,887.39

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Solution

The fourth proportional to 28,436.51, 42,619.13 and 21,887.39 is: 32,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.51 : 42,619.13 = 21,887.39 : x
  2. Step 2: Convert to fraction form
    28,436.51/42,619.13 = 21,887.39/x
  3. Step 3: Cross multiply
    28,436.51x = 42,619.13 × 21,887.39
  4. Step 4: Simplify right side
    28,436.51x = 932,821,410.33
  5. Step 5: Solve for x
    x = 932,821,410.33/28,436.51
  6. Step 6: Final answer
    x = 32,803.65

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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.