Home / 12,177.48-18,253.40-5,155.88

Finding the Fourth Proportional to 12,177.48, 18,253.40 and 5,155.88

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Solution

The fourth proportional to 12,177.48, 18,253.40 and 5,155.88 is: 7,728.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.48 : 18,253.40 = 5,155.88 : x
  2. Step 2: Convert to fraction form
    12,177.48/18,253.40 = 5,155.88/x
  3. Step 3: Cross multiply
    12,177.48x = 18,253.40 × 5,155.88
  4. Step 4: Simplify right side
    12,177.48x = 94,112,339.99
  5. Step 5: Solve for x
    x = 94,112,339.99/12,177.48
  6. Step 6: Final answer
    x = 7,728.39

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1.5x scale

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.