Home / 13,818.66-20,730.95-4,459.21

Finding the Fourth Proportional to 13,818.66, 20,730.95 and 4,459.21

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Solution

The fourth proportional to 13,818.66, 20,730.95 and 4,459.21 is: 6,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.66 : 20,730.95 = 4,459.21 : x
  2. Step 2: Convert to fraction form
    13,818.66/20,730.95 = 4,459.21/x
  3. Step 3: Cross multiply
    13,818.66x = 20,730.95 × 4,459.21
  4. Step 4: Simplify right side
    13,818.66x = 92,443,689.08
  5. Step 5: Solve for x
    x = 92,443,689.08/13,818.66
  6. Step 6: Final answer
    x = 6,689.77

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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.