Home / 18,431.90-25,428.81-11,346.02

Finding the Fourth Proportional to 18,431.90, 25,428.81 and 11,346.02

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Solution

The fourth proportional to 18,431.90, 25,428.81 and 11,346.02 is: 15,653.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.90 : 25,428.81 = 11,346.02 : x
  2. Step 2: Convert to fraction form
    18,431.90/25,428.81 = 11,346.02/x
  3. Step 3: Cross multiply
    18,431.90x = 25,428.81 × 11,346.02
  4. Step 4: Simplify right side
    18,431.90x = 288,515,908.72
  5. Step 5: Solve for x
    x = 288,515,908.72/18,431.90
  6. Step 6: Final answer
    x = 15,653.07

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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.