Home / 13,216.64-18,232.80-7,910.96

Finding the Fourth Proportional to 13,216.64, 18,232.80 and 7,910.96

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Solution

The fourth proportional to 13,216.64, 18,232.80 and 7,910.96 is: 10,913.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.64 : 18,232.80 = 7,910.96 : x
  2. Step 2: Convert to fraction form
    13,216.64/18,232.80 = 7,910.96/x
  3. Step 3: Cross multiply
    13,216.64x = 18,232.80 × 7,910.96
  4. Step 4: Simplify right side
    13,216.64x = 144,238,951.49
  5. Step 5: Solve for x
    x = 144,238,951.49/13,216.64
  6. Step 6: Final answer
    x = 10,913.44

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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.