Home / 12,925.86-19,388.88-7,079.28

Finding the Fourth Proportional to 12,925.86, 19,388.88 and 7,079.28

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Solution

The fourth proportional to 12,925.86, 19,388.88 and 7,079.28 is: 10,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,925.86 : 19,388.88 = 7,079.28 : x
  2. Step 2: Convert to fraction form
    12,925.86/19,388.88 = 7,079.28/x
  3. Step 3: Cross multiply
    12,925.86x = 19,388.88 × 7,079.28
  4. Step 4: Simplify right side
    12,925.86x = 137,259,310.41
  5. Step 5: Solve for x
    x = 137,259,310.41/12,925.86
  6. Step 6: Final answer
    x = 10,618.97

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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.