Home / 15,725.59-21,700.32-8,555.44

Finding the Fourth Proportional to 15,725.59, 21,700.32 and 8,555.44

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Solution

The fourth proportional to 15,725.59, 21,700.32 and 8,555.44 is: 11,805.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.59 : 21,700.32 = 8,555.44 : x
  2. Step 2: Convert to fraction form
    15,725.59/21,700.32 = 8,555.44/x
  3. Step 3: Cross multiply
    15,725.59x = 21,700.32 × 8,555.44
  4. Step 4: Simplify right side
    15,725.59x = 185,655,785.74
  5. Step 5: Solve for x
    x = 185,655,785.74/15,725.59
  6. Step 6: Final answer
    x = 11,805.97

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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.