Home / 15,755.72-21,745.80-9,041.36

Finding the Fourth Proportional to 15,755.72, 21,745.80 and 9,041.36

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Solution

The fourth proportional to 15,755.72, 21,745.80 and 9,041.36 is: 12,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.72 : 21,745.80 = 9,041.36 : x
  2. Step 2: Convert to fraction form
    15,755.72/21,745.80 = 9,041.36/x
  3. Step 3: Cross multiply
    15,755.72x = 21,745.80 × 9,041.36
  4. Step 4: Simplify right side
    15,755.72x = 196,611,497.56
  5. Step 5: Solve for x
    x = 196,611,497.56/15,755.72
  6. Step 6: Final answer
    x = 12,478.74

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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.