Home / 12,137.79-18,197.78-5,117.52

Finding the Fourth Proportional to 12,137.79, 18,197.78 and 5,117.52

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Solution

The fourth proportional to 12,137.79, 18,197.78 and 5,117.52 is: 7,672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.79 : 18,197.78 = 5,117.52 : x
  2. Step 2: Convert to fraction form
    12,137.79/18,197.78 = 5,117.52/x
  3. Step 3: Cross multiply
    12,137.79x = 18,197.78 × 5,117.52
  4. Step 4: Simplify right side
    12,137.79x = 93,127,477.52
  5. Step 5: Solve for x
    x = 93,127,477.52/12,137.79
  6. Step 6: Final answer
    x = 7,672.52

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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.