Home / 12,127.20-18,187.36-5,200

Finding the Fourth Proportional to 12,127.20, 18,187.36 and 5,200

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Solution

The fourth proportional to 12,127.20, 18,187.36 and 5,200 is: 7,798.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.20 : 18,187.36 = 5,200 : x
  2. Step 2: Convert to fraction form
    12,127.20/18,187.36 = 5,200/x
  3. Step 3: Cross multiply
    12,127.20x = 18,187.36 × 5,200
  4. Step 4: Simplify right side
    12,127.20x = 94,574,272
  5. Step 5: Solve for x
    x = 94,574,272/12,127.20
  6. Step 6: Final answer
    x = 7,798.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.