Home / 15,611.05-21,541.74-8,896.51

Finding the Fourth Proportional to 15,611.05, 21,541.74 and 8,896.51

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Solution

The fourth proportional to 15,611.05, 21,541.74 and 8,896.51 is: 12,276.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.05 : 21,541.74 = 8,896.51 : x
  2. Step 2: Convert to fraction form
    15,611.05/21,541.74 = 8,896.51/x
  3. Step 3: Cross multiply
    15,611.05x = 21,541.74 × 8,896.51
  4. Step 4: Simplify right side
    15,611.05x = 191,646,305.33
  5. Step 5: Solve for x
    x = 191,646,305.33/15,611.05
  6. Step 6: Final answer
    x = 12,276.32

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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.