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Finding the Fourth Proportional to 25,903.84, 38,811.12 and 20,392.48

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Solution

The fourth proportional to 25,903.84, 38,811.12 and 20,392.48 is: 30,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,903.84 : 38,811.12 = 20,392.48 : x
  2. Step 2: Convert to fraction form
    25,903.84/38,811.12 = 20,392.48/x
  3. Step 3: Cross multiply
    25,903.84x = 38,811.12 × 20,392.48
  4. Step 4: Simplify right side
    25,903.84x = 791,454,988.38
  5. Step 5: Solve for x
    x = 791,454,988.38/25,903.84
  6. Step 6: Final answer
    x = 30,553.58

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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.