Home / 28,531.78-39,373.83-15,956.50

Finding the Fourth Proportional to 28,531.78, 39,373.83 and 15,956.50

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Solution

The fourth proportional to 28,531.78, 39,373.83 and 15,956.50 is: 22,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.78 : 39,373.83 = 15,956.50 : x
  2. Step 2: Convert to fraction form
    28,531.78/39,373.83 = 15,956.50/x
  3. Step 3: Cross multiply
    28,531.78x = 39,373.83 × 15,956.50
  4. Step 4: Simplify right side
    28,531.78x = 628,268,518.40
  5. Step 5: Solve for x
    x = 628,268,518.40/28,531.78
  6. Step 6: Final answer
    x = 22,019.96

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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.