Home / 21,076.19-31,611.09-7,925.49

Finding the Fourth Proportional to 21,076.19, 31,611.09 and 7,925.49

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Solution

The fourth proportional to 21,076.19, 31,611.09 and 7,925.49 is: 11,887.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.19 : 31,611.09 = 7,925.49 : x
  2. Step 2: Convert to fraction form
    21,076.19/31,611.09 = 7,925.49/x
  3. Step 3: Cross multiply
    21,076.19x = 31,611.09 × 7,925.49
  4. Step 4: Simplify right side
    21,076.19x = 250,533,377.68
  5. Step 5: Solve for x
    x = 250,533,377.68/21,076.19
  6. Step 6: Final answer
    x = 11,887.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.