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Finding the Fourth Proportional to 25,325.90, 37,988.76 and 6,857.90

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Solution

The fourth proportional to 25,325.90, 37,988.76 and 6,857.90 is: 10,286.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,325.90 : 37,988.76 = 6,857.90 : x
  2. Step 2: Convert to fraction form
    25,325.90/37,988.76 = 6,857.90/x
  3. Step 3: Cross multiply
    25,325.90x = 37,988.76 × 6,857.90
  4. Step 4: Simplify right side
    25,325.90x = 260,523,117.20
  5. Step 5: Solve for x
    x = 260,523,117.20/25,325.90
  6. Step 6: Final answer
    x = 10,286.83

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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.