Home / 13,818.08-20,730-4,458.80

Finding the Fourth Proportional to 13,818.08, 20,730 and 4,458.80

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Solution

The fourth proportional to 13,818.08, 20,730 and 4,458.80 is: 6,689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.08 : 20,730 = 4,458.80 : x
  2. Step 2: Convert to fraction form
    13,818.08/20,730 = 4,458.80/x
  3. Step 3: Cross multiply
    13,818.08x = 20,730 × 4,458.80
  4. Step 4: Simplify right side
    13,818.08x = 92,430,924
  5. Step 5: Solve for x
    x = 92,430,924/13,818.08
  6. Step 6: Final answer
    x = 6,689.13

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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.