Home / 15,187.44-20,953.75-8,471.98

Finding the Fourth Proportional to 15,187.44, 20,953.75 and 8,471.98

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Solution

The fourth proportional to 15,187.44, 20,953.75 and 8,471.98 is: 11,688.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.44 : 20,953.75 = 8,471.98 : x
  2. Step 2: Convert to fraction form
    15,187.44/20,953.75 = 8,471.98/x
  3. Step 3: Cross multiply
    15,187.44x = 20,953.75 × 8,471.98
  4. Step 4: Simplify right side
    15,187.44x = 177,519,750.93
  5. Step 5: Solve for x
    x = 177,519,750.93/15,187.44
  6. Step 6: Final answer
    x = 11,688.59

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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.