Home / 30,664.88-45,900.95-21,121.19

Finding the Fourth Proportional to 30,664.88, 45,900.95 and 21,121.19

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Solution

The fourth proportional to 30,664.88, 45,900.95 and 21,121.19 is: 31,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,664.88 : 45,900.95 = 21,121.19 : x
  2. Step 2: Convert to fraction form
    30,664.88/45,900.95 = 21,121.19/x
  3. Step 3: Cross multiply
    30,664.88x = 45,900.95 × 21,121.19
  4. Step 4: Simplify right side
    30,664.88x = 969,482,523.15
  5. Step 5: Solve for x
    x = 969,482,523.15/30,664.88
  6. Step 6: Final answer
    x = 31,615.40

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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.