Home / 15,378.72-21,205.44-12,022.08

Finding the Fourth Proportional to 15,378.72, 21,205.44 and 12,022.08

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Solution

The fourth proportional to 15,378.72, 21,205.44 and 12,022.08 is: 16,577.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378.72 : 21,205.44 = 12,022.08 : x
  2. Step 2: Convert to fraction form
    15,378.72/21,205.44 = 12,022.08/x
  3. Step 3: Cross multiply
    15,378.72x = 21,205.44 × 12,022.08
  4. Step 4: Simplify right side
    15,378.72x = 254,933,496.12
  5. Step 5: Solve for x
    x = 254,933,496.12/15,378.72
  6. Step 6: Final answer
    x = 16,577.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.