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Finding the Fourth Proportional to 25,218.81, 37,828.21 and 7,688.49

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Solution

The fourth proportional to 25,218.81, 37,828.21 and 7,688.49 is: 11,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,218.81 : 37,828.21 = 7,688.49 : x
  2. Step 2: Convert to fraction form
    25,218.81/37,828.21 = 7,688.49/x
  3. Step 3: Cross multiply
    25,218.81x = 37,828.21 × 7,688.49
  4. Step 4: Simplify right side
    25,218.81x = 290,841,625.16
  5. Step 5: Solve for x
    x = 290,841,625.16/25,218.81
  6. Step 6: Final answer
    x = 11,532.73

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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.