Home / 18,388.13-25,371.84-10,428.26

Finding the Fourth Proportional to 18,388.13, 25,371.84 and 10,428.26

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Solution

The fourth proportional to 18,388.13, 25,371.84 and 10,428.26 is: 14,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.13 : 25,371.84 = 10,428.26 : x
  2. Step 2: Convert to fraction form
    18,388.13/25,371.84 = 10,428.26/x
  3. Step 3: Cross multiply
    18,388.13x = 25,371.84 × 10,428.26
  4. Step 4: Simplify right side
    18,388.13x = 264,584,017.34
  5. Step 5: Solve for x
    x = 264,584,017.34/18,388.13
  6. Step 6: Final answer
    x = 14,388.85

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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.