Home / 15,216.51-20,997.58-8,501.61

Finding the Fourth Proportional to 15,216.51, 20,997.58 and 8,501.61

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Solution

The fourth proportional to 15,216.51, 20,997.58 and 8,501.61 is: 11,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.51 : 20,997.58 = 8,501.61 : x
  2. Step 2: Convert to fraction form
    15,216.51/20,997.58 = 8,501.61/x
  3. Step 3: Cross multiply
    15,216.51x = 20,997.58 × 8,501.61
  4. Step 4: Simplify right side
    15,216.51x = 178,513,236.10
  5. Step 5: Solve for x
    x = 178,513,236.10/15,216.51
  6. Step 6: Final answer
    x = 11,731.55

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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.