Home / 21,037.12-31,557.36-12,272.92

Finding the Fourth Proportional to 21,037.12, 31,557.36 and 12,272.92

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Solution

The fourth proportional to 21,037.12, 31,557.36 and 12,272.92 is: 18,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.12 : 31,557.36 = 12,272.92 : x
  2. Step 2: Convert to fraction form
    21,037.12/31,557.36 = 12,272.92/x
  3. Step 3: Cross multiply
    21,037.12x = 31,557.36 × 12,272.92
  4. Step 4: Simplify right side
    21,037.12x = 387,300,954.69
  5. Step 5: Solve for x
    x = 387,300,954.69/21,037.12
  6. Step 6: Final answer
    x = 18,410.36

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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.