Home / 21,159.90-31,741.16-5,577.53

Finding the Fourth Proportional to 21,159.90, 31,741.16 and 5,577.53

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Solution

The fourth proportional to 21,159.90, 31,741.16 and 5,577.53 is: 8,366.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.90 : 31,741.16 = 5,577.53 : x
  2. Step 2: Convert to fraction form
    21,159.90/31,741.16 = 5,577.53/x
  3. Step 3: Cross multiply
    21,159.90x = 31,741.16 × 5,577.53
  4. Step 4: Simplify right side
    21,159.90x = 177,037,085.54
  5. Step 5: Solve for x
    x = 177,037,085.54/21,159.90
  6. Step 6: Final answer
    x = 8,366.63

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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.