Home / 15,611.10-21,539.16-8,896.58

Finding the Fourth Proportional to 15,611.10, 21,539.16 and 8,896.58

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Solution

The fourth proportional to 15,611.10, 21,539.16 and 8,896.58 is: 12,274.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.10 : 21,539.16 = 8,896.58 : x
  2. Step 2: Convert to fraction form
    15,611.10/21,539.16 = 8,896.58/x
  3. Step 3: Cross multiply
    15,611.10x = 21,539.16 × 8,896.58
  4. Step 4: Simplify right side
    15,611.10x = 191,624,752.38
  5. Step 5: Solve for x
    x = 191,624,752.38/15,611.10
  6. Step 6: Final answer
    x = 12,274.90

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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.