Home / 21,037.71-31,568.64-8,555.43

Finding the Fourth Proportional to 21,037.71, 31,568.64 and 8,555.43

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Solution

The fourth proportional to 21,037.71, 31,568.64 and 8,555.43 is: 12,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.71 : 31,568.64 = 8,555.43 : x
  2. Step 2: Convert to fraction form
    21,037.71/31,568.64 = 8,555.43/x
  3. Step 3: Cross multiply
    21,037.71x = 31,568.64 × 8,555.43
  4. Step 4: Simplify right side
    21,037.71x = 270,083,289.72
  5. Step 5: Solve for x
    x = 270,083,289.72/21,037.71
  6. Step 6: Final answer
    x = 12,838.06

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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.