Home / 18,261.45-27,345.09-15,645.86

Finding the Fourth Proportional to 18,261.45, 27,345.09 and 15,645.86

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Solution

The fourth proportional to 18,261.45, 27,345.09 and 15,645.86 is: 23,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.45 : 27,345.09 = 15,645.86 : x
  2. Step 2: Convert to fraction form
    18,261.45/27,345.09 = 15,645.86/x
  3. Step 3: Cross multiply
    18,261.45x = 27,345.09 × 15,645.86
  4. Step 4: Simplify right side
    18,261.45x = 427,837,474.32
  5. Step 5: Solve for x
    x = 427,837,474.32/18,261.45
  6. Step 6: Final answer
    x = 23,428.45

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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.