Home / 15,685.04-21,645.42-8,611.58

Finding the Fourth Proportional to 15,685.04, 21,645.42 and 8,611.58

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Solution

The fourth proportional to 15,685.04, 21,645.42 and 8,611.58 is: 11,884.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685.04 : 21,645.42 = 8,611.58 : x
  2. Step 2: Convert to fraction form
    15,685.04/21,645.42 = 8,611.58/x
  3. Step 3: Cross multiply
    15,685.04x = 21,645.42 × 8,611.58
  4. Step 4: Simplify right side
    15,685.04x = 186,401,265.96
  5. Step 5: Solve for x
    x = 186,401,265.96/15,685.04
  6. Step 6: Final answer
    x = 11,884.02

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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.