Home / 15,170.64-20,935.40-8,456.56

Finding the Fourth Proportional to 15,170.64, 20,935.40 and 8,456.56

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Solution

The fourth proportional to 15,170.64, 20,935.40 and 8,456.56 is: 11,670.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.64 : 20,935.40 = 8,456.56 : x
  2. Step 2: Convert to fraction form
    15,170.64/20,935.40 = 8,456.56/x
  3. Step 3: Cross multiply
    15,170.64x = 20,935.40 × 8,456.56
  4. Step 4: Simplify right side
    15,170.64x = 177,041,466.22
  5. Step 5: Solve for x
    x = 177,041,466.22/15,170.64
  6. Step 6: Final answer
    x = 11,670.01

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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.