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Finding the Fourth Proportional to 25,785.30, 38,677.95 and 7,065.39

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Solution

The fourth proportional to 25,785.30, 38,677.95 and 7,065.39 is: 10,598.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.30 : 38,677.95 = 7,065.39 : x
  2. Step 2: Convert to fraction form
    25,785.30/38,677.95 = 7,065.39/x
  3. Step 3: Cross multiply
    25,785.30x = 38,677.95 × 7,065.39
  4. Step 4: Simplify right side
    25,785.30x = 273,274,801.15
  5. Step 5: Solve for x
    x = 273,274,801.15/25,785.30
  6. Step 6: Final answer
    x = 10,598.09

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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.