Home / 20,290.77-30,447.09-15,359.22

Finding the Fourth Proportional to 20,290.77, 30,447.09 and 15,359.22

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Solution

The fourth proportional to 20,290.77, 30,447.09 and 15,359.22 is: 23,047.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.77 : 30,447.09 = 15,359.22 : x
  2. Step 2: Convert to fraction form
    20,290.77/30,447.09 = 15,359.22/x
  3. Step 3: Cross multiply
    20,290.77x = 30,447.09 × 15,359.22
  4. Step 4: Simplify right side
    20,290.77x = 467,643,553.67
  5. Step 5: Solve for x
    x = 467,643,553.67/20,290.77
  6. Step 6: Final answer
    x = 23,047.11

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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.