Home / 21,045.16-31,537.66-15,454.64

Finding the Fourth Proportional to 21,045.16, 31,537.66 and 15,454.64

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Solution

The fourth proportional to 21,045.16, 31,537.66 and 15,454.64 is: 23,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.16 : 31,537.66 = 15,454.64 : x
  2. Step 2: Convert to fraction form
    21,045.16/31,537.66 = 15,454.64/x
  3. Step 3: Cross multiply
    21,045.16x = 31,537.66 × 15,454.64
  4. Step 4: Simplify right side
    21,045.16x = 487,403,181.74
  5. Step 5: Solve for x
    x = 487,403,181.74/21,045.16
  6. Step 6: Final answer
    x = 23,159.87

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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.