Home / 15,660.42-21,611.57-8,586.69

Finding the Fourth Proportional to 15,660.42, 21,611.57 and 8,586.69

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Solution

The fourth proportional to 15,660.42, 21,611.57 and 8,586.69 is: 11,849.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.42 : 21,611.57 = 8,586.69 : x
  2. Step 2: Convert to fraction form
    15,660.42/21,611.57 = 8,586.69/x
  3. Step 3: Cross multiply
    15,660.42x = 21,611.57 × 8,586.69
  4. Step 4: Simplify right side
    15,660.42x = 185,571,852.00
  5. Step 5: Solve for x
    x = 185,571,852.00/15,660.42
  6. Step 6: Final answer
    x = 11,849.74

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Half scale
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Double scale
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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.