Home / 38,278-52,822.56-21,281.82

Finding the Fourth Proportional to 38,278, 52,822.56 and 21,281.82

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Solution

The fourth proportional to 38,278, 52,822.56 and 21,281.82 is: 29,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,278 : 52,822.56 = 21,281.82 : x
  2. Step 2: Convert to fraction form
    38,278/52,822.56 = 21,281.82/x
  3. Step 3: Cross multiply
    38,278x = 52,822.56 × 21,281.82
  4. Step 4: Simplify right side
    38,278x = 1,124,160,213.86
  5. Step 5: Solve for x
    x = 1,124,160,213.86/38,278
  6. Step 6: Final answer
    x = 29,368.31

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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.