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Finding the Fourth Proportional to 25,698.30, 38,518.65 and 10,904.70

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Solution

The fourth proportional to 25,698.30, 38,518.65 and 10,904.70 is: 16,344.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,698.30 : 38,518.65 = 10,904.70 : x
  2. Step 2: Convert to fraction form
    25,698.30/38,518.65 = 10,904.70/x
  3. Step 3: Cross multiply
    25,698.30x = 38,518.65 × 10,904.70
  4. Step 4: Simplify right side
    25,698.30x = 420,034,322.66
  5. Step 5: Solve for x
    x = 420,034,322.66/25,698.30
  6. Step 6: Final answer
    x = 16,344.83

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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.