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Finding the Fourth Proportional to 25,459.44, 35,138.03 and 15,389.38

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Solution

The fourth proportional to 25,459.44, 35,138.03 and 15,389.38 is: 21,239.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,459.44 : 35,138.03 = 15,389.38 : x
  2. Step 2: Convert to fraction form
    25,459.44/35,138.03 = 15,389.38/x
  3. Step 3: Cross multiply
    25,459.44x = 35,138.03 × 15,389.38
  4. Step 4: Simplify right side
    25,459.44x = 540,752,496.12
  5. Step 5: Solve for x
    x = 540,752,496.12/25,459.44
  6. Step 6: Final answer
    x = 21,239.76

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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.