Home / 20,037.88-27,647.31-12,955.78

Finding the Fourth Proportional to 20,037.88, 27,647.31 and 12,955.78

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Solution

The fourth proportional to 20,037.88, 27,647.31 and 12,955.78 is: 17,875.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,037.88 : 27,647.31 = 12,955.78 : x
  2. Step 2: Convert to fraction form
    20,037.88/27,647.31 = 12,955.78/x
  3. Step 3: Cross multiply
    20,037.88x = 27,647.31 × 12,955.78
  4. Step 4: Simplify right side
    20,037.88x = 358,192,476.22
  5. Step 5: Solve for x
    x = 358,192,476.22/20,037.88
  6. Step 6: Final answer
    x = 17,875.77

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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.