Home / 28,953.75-39,956.18-15,705.75

Finding the Fourth Proportional to 28,953.75, 39,956.18 and 15,705.75

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Solution

The fourth proportional to 28,953.75, 39,956.18 and 15,705.75 is: 21,673.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,953.75 : 39,956.18 = 15,705.75 : x
  2. Step 2: Convert to fraction form
    28,953.75/39,956.18 = 15,705.75/x
  3. Step 3: Cross multiply
    28,953.75x = 39,956.18 × 15,705.75
  4. Step 4: Simplify right side
    28,953.75x = 627,541,774.04
  5. Step 5: Solve for x
    x = 627,541,774.04/28,953.75
  6. Step 6: Final answer
    x = 21,673.94

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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.