Home / 30,106.60-45,229.08-21,242.32

Finding the Fourth Proportional to 30,106.60, 45,229.08 and 21,242.32

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Solution

The fourth proportional to 30,106.60, 45,229.08 and 21,242.32 is: 31,912.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,106.60 : 45,229.08 = 21,242.32 : x
  2. Step 2: Convert to fraction form
    30,106.60/45,229.08 = 21,242.32/x
  3. Step 3: Cross multiply
    30,106.60x = 45,229.08 × 21,242.32
  4. Step 4: Simplify right side
    30,106.60x = 960,770,590.67
  5. Step 5: Solve for x
    x = 960,770,590.67/30,106.60
  6. Step 6: Final answer
    x = 31,912.29

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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.