Home / 12,160.25-16,781.36-6,783.15

Finding the Fourth Proportional to 12,160.25, 16,781.36 and 6,783.15

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Solution

The fourth proportional to 12,160.25, 16,781.36 and 6,783.15 is: 9,360.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.25 : 16,781.36 = 6,783.15 : x
  2. Step 2: Convert to fraction form
    12,160.25/16,781.36 = 6,783.15/x
  3. Step 3: Cross multiply
    12,160.25x = 16,781.36 × 6,783.15
  4. Step 4: Simplify right side
    12,160.25x = 113,830,448.17
  5. Step 5: Solve for x
    x = 113,830,448.17/12,160.25
  6. Step 6: Final answer
    x = 9,360.87

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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.