Home / 21,037.78-29,032.80-12,087.10

Finding the Fourth Proportional to 21,037.78, 29,032.80 and 12,087.10

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Solution

The fourth proportional to 21,037.78, 29,032.80 and 12,087.10 is: 16,680.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.78 : 29,032.80 = 12,087.10 : x
  2. Step 2: Convert to fraction form
    21,037.78/29,032.80 = 12,087.10/x
  3. Step 3: Cross multiply
    21,037.78x = 29,032.80 × 12,087.10
  4. Step 4: Simplify right side
    21,037.78x = 350,922,356.88
  5. Step 5: Solve for x
    x = 350,922,356.88/21,037.78
  6. Step 6: Final answer
    x = 16,680.58

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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.