Home / 28,414.79-42,620.64-8,693.35

Finding the Fourth Proportional to 28,414.79, 42,620.64 and 8,693.35

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Solution

The fourth proportional to 28,414.79, 42,620.64 and 8,693.35 is: 13,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.79 : 42,620.64 = 8,693.35 : x
  2. Step 2: Convert to fraction form
    28,414.79/42,620.64 = 8,693.35/x
  3. Step 3: Cross multiply
    28,414.79x = 42,620.64 × 8,693.35
  4. Step 4: Simplify right side
    28,414.79x = 370,516,140.74
  5. Step 5: Solve for x
    x = 370,516,140.74/28,414.79
  6. Step 6: Final answer
    x = 13,039.55

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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.