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Finding the Fourth Proportional to 25,435, 35,091.90 and 15,359.62

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Solution

The fourth proportional to 25,435, 35,091.90 and 15,359.62 is: 21,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,435 : 35,091.90 = 15,359.62 : x
  2. Step 2: Convert to fraction form
    25,435/35,091.90 = 15,359.62/x
  3. Step 3: Cross multiply
    25,435x = 35,091.90 × 15,359.62
  4. Step 4: Simplify right side
    25,435x = 538,998,073.62
  5. Step 5: Solve for x
    x = 538,998,073.62/25,435
  6. Step 6: Final answer
    x = 21,191.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.