Home / 13,217.50-18,238.47-7,247.60

Finding the Fourth Proportional to 13,217.50, 18,238.47 and 7,247.60

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Solution

The fourth proportional to 13,217.50, 18,238.47 and 7,247.60 is: 10,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.50 : 18,238.47 = 7,247.60 : x
  2. Step 2: Convert to fraction form
    13,217.50/18,238.47 = 7,247.60/x
  3. Step 3: Cross multiply
    13,217.50x = 18,238.47 × 7,247.60
  4. Step 4: Simplify right side
    13,217.50x = 132,185,135.17
  5. Step 5: Solve for x
    x = 132,185,135.17/13,217.50
  6. Step 6: Final answer
    x = 10,000.77

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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.