Home / 12,578.32-17,358.96-6,989.68

Finding the Fourth Proportional to 12,578.32, 17,358.96 and 6,989.68

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Solution

The fourth proportional to 12,578.32, 17,358.96 and 6,989.68 is: 9,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.32 : 17,358.96 = 6,989.68 : x
  2. Step 2: Convert to fraction form
    12,578.32/17,358.96 = 6,989.68/x
  3. Step 3: Cross multiply
    12,578.32x = 17,358.96 × 6,989.68
  4. Step 4: Simplify right side
    12,578.32x = 121,333,575.53
  5. Step 5: Solve for x
    x = 121,333,575.53/12,578.32
  6. Step 6: Final answer
    x = 9,646.25

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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.