Home / 12,117.30-18,166.35-6,645.30

Finding the Fourth Proportional to 12,117.30, 18,166.35 and 6,645.30

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Solution

The fourth proportional to 12,117.30, 18,166.35 and 6,645.30 is: 9,962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.30 : 18,166.35 = 6,645.30 : x
  2. Step 2: Convert to fraction form
    12,117.30/18,166.35 = 6,645.30/x
  3. Step 3: Cross multiply
    12,117.30x = 18,166.35 × 6,645.30
  4. Step 4: Simplify right side
    12,117.30x = 120,720,845.66
  5. Step 5: Solve for x
    x = 120,720,845.66/12,117.30
  6. Step 6: Final answer
    x = 9,962.69

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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.