Home / 13,877.84-20,827.68-6,478.52

Finding the Fourth Proportional to 13,877.84, 20,827.68 and 6,478.52

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Solution

The fourth proportional to 13,877.84, 20,827.68 and 6,478.52 is: 9,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.84 : 20,827.68 = 6,478.52 : x
  2. Step 2: Convert to fraction form
    13,877.84/20,827.68 = 6,478.52/x
  3. Step 3: Cross multiply
    13,877.84x = 20,827.68 × 6,478.52
  4. Step 4: Simplify right side
    13,877.84x = 134,932,541.43
  5. Step 5: Solve for x
    x = 134,932,541.43/13,877.84
  6. Step 6: Final answer
    x = 9,722.88

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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.