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Finding the Fourth Proportional to 25,479.32, 38,218.97 and 7,950.51

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Solution

The fourth proportional to 25,479.32, 38,218.97 and 7,950.51 is: 11,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,479.32 : 38,218.97 = 7,950.51 : x
  2. Step 2: Convert to fraction form
    25,479.32/38,218.97 = 7,950.51/x
  3. Step 3: Cross multiply
    25,479.32x = 38,218.97 × 7,950.51
  4. Step 4: Simplify right side
    25,479.32x = 303,860,323.05
  5. Step 5: Solve for x
    x = 303,860,323.05/25,479.32
  6. Step 6: Final answer
    x = 11,925.77

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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.