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Finding the Fourth Proportional to 25,919.64, 38,859.48 and 8,384.76

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Solution

The fourth proportional to 25,919.64, 38,859.48 and 8,384.76 is: 12,570.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,919.64 : 38,859.48 = 8,384.76 : x
  2. Step 2: Convert to fraction form
    25,919.64/38,859.48 = 8,384.76/x
  3. Step 3: Cross multiply
    25,919.64x = 38,859.48 × 8,384.76
  4. Step 4: Simplify right side
    25,919.64x = 325,827,413.52
  5. Step 5: Solve for x
    x = 325,827,413.52/25,919.64
  6. Step 6: Final answer
    x = 12,570.68

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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.