Home / 15,520.64-21,380.85-11,534.84

Finding the Fourth Proportional to 15,520.64, 21,380.85 and 11,534.84

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Solution

The fourth proportional to 15,520.64, 21,380.85 and 11,534.84 is: 15,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,520.64 : 21,380.85 = 11,534.84 : x
  2. Step 2: Convert to fraction form
    15,520.64/21,380.85 = 11,534.84/x
  3. Step 3: Cross multiply
    15,520.64x = 21,380.85 × 11,534.84
  4. Step 4: Simplify right side
    15,520.64x = 246,624,683.81
  5. Step 5: Solve for x
    x = 246,624,683.81/15,520.64
  6. Step 6: Final answer
    x = 15,890.11

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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.