Home / 15,500.20-21,395.76-9,212.50

Finding the Fourth Proportional to 15,500.20, 21,395.76 and 9,212.50

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Solution

The fourth proportional to 15,500.20, 21,395.76 and 9,212.50 is: 12,716.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.20 : 21,395.76 = 9,212.50 : x
  2. Step 2: Convert to fraction form
    15,500.20/21,395.76 = 9,212.50/x
  3. Step 3: Cross multiply
    15,500.20x = 21,395.76 × 9,212.50
  4. Step 4: Simplify right side
    15,500.20x = 197,108,439
  5. Step 5: Solve for x
    x = 197,108,439/15,500.20
  6. Step 6: Final answer
    x = 12,716.51

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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.