Home / 28,954.40-39,961.35-18,345.02

Finding the Fourth Proportional to 28,954.40, 39,961.35 and 18,345.02

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Solution

The fourth proportional to 28,954.40, 39,961.35 and 18,345.02 is: 25,318.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.40 : 39,961.35 = 18,345.02 : x
  2. Step 2: Convert to fraction form
    28,954.40/39,961.35 = 18,345.02/x
  3. Step 3: Cross multiply
    28,954.40x = 39,961.35 × 18,345.02
  4. Step 4: Simplify right side
    28,954.40x = 733,091,565.17
  5. Step 5: Solve for x
    x = 733,091,565.17/28,954.40
  6. Step 6: Final answer
    x = 25,318.84

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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.