Home / 15,659.70-21,611.73-8,587.48

Finding the Fourth Proportional to 15,659.70, 21,611.73 and 8,587.48

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Solution

The fourth proportional to 15,659.70, 21,611.73 and 8,587.48 is: 11,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.70 : 21,611.73 = 8,587.48 : x
  2. Step 2: Convert to fraction form
    15,659.70/21,611.73 = 8,587.48/x
  3. Step 3: Cross multiply
    15,659.70x = 21,611.73 × 8,587.48
  4. Step 4: Simplify right side
    15,659.70x = 185,590,299.14
  5. Step 5: Solve for x
    x = 185,590,299.14/15,659.70
  6. Step 6: Final answer
    x = 11,851.46

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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.