Home / 15,725.63-21,701.57-8,651.90

Finding the Fourth Proportional to 15,725.63, 21,701.57 and 8,651.90

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Solution

The fourth proportional to 15,725.63, 21,701.57 and 8,651.90 is: 11,939.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.63 : 21,701.57 = 8,651.90 : x
  2. Step 2: Convert to fraction form
    15,725.63/21,701.57 = 8,651.90/x
  3. Step 3: Cross multiply
    15,725.63x = 21,701.57 × 8,651.90
  4. Step 4: Simplify right side
    15,725.63x = 187,759,661.72
  5. Step 5: Solve for x
    x = 187,759,661.72/15,725.63
  6. Step 6: Final answer
    x = 11,939.73

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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.