Home / 12,161.24-18,248.90-5,140.80

Finding the Fourth Proportional to 12,161.24, 18,248.90 and 5,140.80

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Solution

The fourth proportional to 12,161.24, 18,248.90 and 5,140.80 is: 7,714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.24 : 18,248.90 = 5,140.80 : x
  2. Step 2: Convert to fraction form
    12,161.24/18,248.90 = 5,140.80/x
  3. Step 3: Cross multiply
    12,161.24x = 18,248.90 × 5,140.80
  4. Step 4: Simplify right side
    12,161.24x = 93,813,893.75
  5. Step 5: Solve for x
    x = 93,813,893.75/12,161.24
  6. Step 6: Final answer
    x = 7,714.17

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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.