Home / 21,074.74-31,543.52-15,525.90

Finding the Fourth Proportional to 21,074.74, 31,543.52 and 15,525.90

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Solution

The fourth proportional to 21,074.74, 31,543.52 and 15,525.90 is: 23,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.74 : 31,543.52 = 15,525.90 : x
  2. Step 2: Convert to fraction form
    21,074.74/31,543.52 = 15,525.90/x
  3. Step 3: Cross multiply
    21,074.74x = 31,543.52 × 15,525.90
  4. Step 4: Simplify right side
    21,074.74x = 489,741,537.17
  5. Step 5: Solve for x
    x = 489,741,537.17/21,074.74
  6. Step 6: Final answer
    x = 23,238.32

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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.