Home / 11,981.28-16,529.48-7,503.12

Finding the Fourth Proportional to 11,981.28, 16,529.48 and 7,503.12

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Solution

The fourth proportional to 11,981.28, 16,529.48 and 7,503.12 is: 10,351.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.28 : 16,529.48 = 7,503.12 : x
  2. Step 2: Convert to fraction form
    11,981.28/16,529.48 = 7,503.12/x
  3. Step 3: Cross multiply
    11,981.28x = 16,529.48 × 7,503.12
  4. Step 4: Simplify right side
    11,981.28x = 124,022,671.98
  5. Step 5: Solve for x
    x = 124,022,671.98/11,981.28
  6. Step 6: Final answer
    x = 10,351.37

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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.