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Finding the Fourth Proportional to 25,145.92, 37,720.70 and 8,507.70

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Solution

The fourth proportional to 25,145.92, 37,720.70 and 8,507.70 is: 12,762.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,145.92 : 37,720.70 = 8,507.70 : x
  2. Step 2: Convert to fraction form
    25,145.92/37,720.70 = 8,507.70/x
  3. Step 3: Cross multiply
    25,145.92x = 37,720.70 × 8,507.70
  4. Step 4: Simplify right side
    25,145.92x = 320,916,399.39
  5. Step 5: Solve for x
    x = 320,916,399.39/25,145.92
  6. Step 6: Final answer
    x = 12,762.17

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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.