Home / 12,788.08-17,647.47-7,122.53

Finding the Fourth Proportional to 12,788.08, 17,647.47 and 7,122.53

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Solution

The fourth proportional to 12,788.08, 17,647.47 and 7,122.53 is: 9,829.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.08 : 17,647.47 = 7,122.53 : x
  2. Step 2: Convert to fraction form
    12,788.08/17,647.47 = 7,122.53/x
  3. Step 3: Cross multiply
    12,788.08x = 17,647.47 × 7,122.53
  4. Step 4: Simplify right side
    12,788.08x = 125,694,678.62
  5. Step 5: Solve for x
    x = 125,694,678.62/12,788.08
  6. Step 6: Final answer
    x = 9,829.05

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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.