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Finding the Fourth Proportional to 25,669.65, 38,503.94 and 11,818.65

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Solution

The fourth proportional to 25,669.65, 38,503.94 and 11,818.65 is: 17,727.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,669.65 : 38,503.94 = 11,818.65 : x
  2. Step 2: Convert to fraction form
    25,669.65/38,503.94 = 11,818.65/x
  3. Step 3: Cross multiply
    25,669.65x = 38,503.94 × 11,818.65
  4. Step 4: Simplify right side
    25,669.65x = 455,064,531.39
  5. Step 5: Solve for x
    x = 455,064,531.39/25,669.65
  6. Step 6: Final answer
    x = 17,727.73

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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.