Home / 12,800.06-19,212.55-9,788.08

Finding the Fourth Proportional to 12,800.06, 19,212.55 and 9,788.08

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Solution

The fourth proportional to 12,800.06, 19,212.55 and 9,788.08 is: 14,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.06 : 19,212.55 = 9,788.08 : x
  2. Step 2: Convert to fraction form
    12,800.06/19,212.55 = 9,788.08/x
  3. Step 3: Cross multiply
    12,800.06x = 19,212.55 × 9,788.08
  4. Step 4: Simplify right side
    12,800.06x = 188,053,880.34
  5. Step 5: Solve for x
    x = 188,053,880.34/12,800.06
  6. Step 6: Final answer
    x = 14,691.64

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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.