Home / 30,339.80-45,454.22-21,999.16

Finding the Fourth Proportional to 30,339.80, 45,454.22 and 21,999.16

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Solution

The fourth proportional to 30,339.80, 45,454.22 and 21,999.16 is: 32,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.80 : 45,454.22 = 21,999.16 : x
  2. Step 2: Convert to fraction form
    30,339.80/45,454.22 = 21,999.16/x
  3. Step 3: Cross multiply
    30,339.80x = 45,454.22 × 21,999.16
  4. Step 4: Simplify right side
    30,339.80x = 999,954,658.46
  5. Step 5: Solve for x
    x = 999,954,658.46/30,339.80
  6. Step 6: Final answer
    x = 32,958.51

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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.