Home / 20,657.20-31,050.60-20,268.40

Finding the Fourth Proportional to 20,657.20, 31,050.60 and 20,268.40

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Solution

The fourth proportional to 20,657.20, 31,050.60 and 20,268.40 is: 30,466.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.20 : 31,050.60 = 20,268.40 : x
  2. Step 2: Convert to fraction form
    20,657.20/31,050.60 = 20,268.40/x
  3. Step 3: Cross multiply
    20,657.20x = 31,050.60 × 20,268.40
  4. Step 4: Simplify right side
    20,657.20x = 629,345,981.04
  5. Step 5: Solve for x
    x = 629,345,981.04/20,657.20
  6. Step 6: Final answer
    x = 30,466.18

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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.