Home / 13,837.12-20,716.80-12,437.44

Finding the Fourth Proportional to 13,837.12, 20,716.80 and 12,437.44

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Solution

The fourth proportional to 13,837.12, 20,716.80 and 12,437.44 is: 18,621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,837.12 : 20,716.80 = 12,437.44 : x
  2. Step 2: Convert to fraction form
    13,837.12/20,716.80 = 12,437.44/x
  3. Step 3: Cross multiply
    13,837.12x = 20,716.80 × 12,437.44
  4. Step 4: Simplify right side
    13,837.12x = 257,663,956.99
  5. Step 5: Solve for x
    x = 257,663,956.99/13,837.12
  6. Step 6: Final answer
    x = 18,621.21

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1.5x scale

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.