Home / 18,424.32-25,428.64-10,872.52

Finding the Fourth Proportional to 18,424.32, 25,428.64 and 10,872.52

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Solution

The fourth proportional to 18,424.32, 25,428.64 and 10,872.52 is: 15,005.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.32 : 25,428.64 = 10,872.52 : x
  2. Step 2: Convert to fraction form
    18,424.32/25,428.64 = 10,872.52/x
  3. Step 3: Cross multiply
    18,424.32x = 25,428.64 × 10,872.52
  4. Step 4: Simplify right side
    18,424.32x = 276,473,396.97
  5. Step 5: Solve for x
    x = 276,473,396.97/18,424.32
  6. Step 6: Final answer
    x = 15,005.89

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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.