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Finding the Fourth Proportional to 25,607.10, 38,410.65 and 20,423.10

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Solution

The fourth proportional to 25,607.10, 38,410.65 and 20,423.10 is: 30,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,607.10 : 38,410.65 = 20,423.10 : x
  2. Step 2: Convert to fraction form
    25,607.10/38,410.65 = 20,423.10/x
  3. Step 3: Cross multiply
    25,607.10x = 38,410.65 × 20,423.10
  4. Step 4: Simplify right side
    25,607.10x = 784,464,546.02
  5. Step 5: Solve for x
    x = 784,464,546.02/25,607.10
  6. Step 6: Final answer
    x = 30,634.65

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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.