Home / 15,812.55-21,822.75-8,741.25

Finding the Fourth Proportional to 15,812.55, 21,822.75 and 8,741.25

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Solution

The fourth proportional to 15,812.55, 21,822.75 and 8,741.25 is: 12,063.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.55 : 21,822.75 = 8,741.25 : x
  2. Step 2: Convert to fraction form
    15,812.55/21,822.75 = 8,741.25/x
  3. Step 3: Cross multiply
    15,812.55x = 21,822.75 × 8,741.25
  4. Step 4: Simplify right side
    15,812.55x = 190,758,113.44
  5. Step 5: Solve for x
    x = 190,758,113.44/15,812.55
  6. Step 6: Final answer
    x = 12,063.72

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1.5x scale

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.