Home / 21,325.68-31,977.80-12,444.04

Finding the Fourth Proportional to 21,325.68, 31,977.80 and 12,444.04

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Solution

The fourth proportional to 21,325.68, 31,977.80 and 12,444.04 is: 18,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.68 : 31,977.80 = 12,444.04 : x
  2. Step 2: Convert to fraction form
    21,325.68/31,977.80 = 12,444.04/x
  3. Step 3: Cross multiply
    21,325.68x = 31,977.80 × 12,444.04
  4. Step 4: Simplify right side
    21,325.68x = 397,933,022.31
  5. Step 5: Solve for x
    x = 397,933,022.31/21,325.68
  6. Step 6: Final answer
    x = 18,659.80

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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.