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Finding the Fourth Proportional to 25,287.09, 37,935.09 and 8,643.21

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Solution

The fourth proportional to 25,287.09, 37,935.09 and 8,643.21 is: 12,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,287.09 : 37,935.09 = 8,643.21 : x
  2. Step 2: Convert to fraction form
    25,287.09/37,935.09 = 8,643.21/x
  3. Step 3: Cross multiply
    25,287.09x = 37,935.09 × 8,643.21
  4. Step 4: Simplify right side
    25,287.09x = 327,880,949.24
  5. Step 5: Solve for x
    x = 327,880,949.24/25,287.09
  6. Step 6: Final answer
    x = 12,966.34

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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.