Home / 15,415.29-21,273.73-8,700.91

Finding the Fourth Proportional to 15,415.29, 21,273.73 and 8,700.91

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Solution

The fourth proportional to 15,415.29, 21,273.73 and 8,700.91 is: 12,007.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.29 : 21,273.73 = 8,700.91 : x
  2. Step 2: Convert to fraction form
    15,415.29/21,273.73 = 8,700.91/x
  3. Step 3: Cross multiply
    15,415.29x = 21,273.73 × 8,700.91
  4. Step 4: Simplify right side
    15,415.29x = 185,100,735.16
  5. Step 5: Solve for x
    x = 185,100,735.16/15,415.29
  6. Step 6: Final answer
    x = 12,007.61

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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.