Home / 12,518.88-18,789.60-6,680.48

Finding the Fourth Proportional to 12,518.88, 18,789.60 and 6,680.48

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Solution

The fourth proportional to 12,518.88, 18,789.60 and 6,680.48 is: 10,026.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.88 : 18,789.60 = 6,680.48 : x
  2. Step 2: Convert to fraction form
    12,518.88/18,789.60 = 6,680.48/x
  3. Step 3: Cross multiply
    12,518.88x = 18,789.60 × 6,680.48
  4. Step 4: Simplify right side
    12,518.88x = 125,523,547.01
  5. Step 5: Solve for x
    x = 125,523,547.01/12,518.88
  6. Step 6: Final answer
    x = 10,026.74

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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.