Home / 13,518.23-20,278.35-3,657.29

Finding the Fourth Proportional to 13,518.23, 20,278.35 and 3,657.29

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Solution

The fourth proportional to 13,518.23, 20,278.35 and 3,657.29 is: 5,486.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.23 : 20,278.35 = 3,657.29 : x
  2. Step 2: Convert to fraction form
    13,518.23/20,278.35 = 3,657.29/x
  3. Step 3: Cross multiply
    13,518.23x = 20,278.35 × 3,657.29
  4. Step 4: Simplify right side
    13,518.23x = 74,163,705.28
  5. Step 5: Solve for x
    x = 74,163,705.28/13,518.23
  6. Step 6: Final answer
    x = 5,486.20

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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.