Home / 15,766.42-21,758.64-8,693.50

Finding the Fourth Proportional to 15,766.42, 21,758.64 and 8,693.50

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Solution

The fourth proportional to 15,766.42, 21,758.64 and 8,693.50 is: 11,997.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.42 : 21,758.64 = 8,693.50 : x
  2. Step 2: Convert to fraction form
    15,766.42/21,758.64 = 8,693.50/x
  3. Step 3: Cross multiply
    15,766.42x = 21,758.64 × 8,693.50
  4. Step 4: Simplify right side
    15,766.42x = 189,158,736.84
  5. Step 5: Solve for x
    x = 189,158,736.84/15,766.42
  6. Step 6: Final answer
    x = 11,997.57

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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.