Home / 31,445.22-43,412.32-20,849.18

Finding the Fourth Proportional to 31,445.22, 43,412.32 and 20,849.18

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Solution

The fourth proportional to 31,445.22, 43,412.32 and 20,849.18 is: 28,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.22 : 43,412.32 = 20,849.18 : x
  2. Step 2: Convert to fraction form
    31,445.22/43,412.32 = 20,849.18/x
  3. Step 3: Cross multiply
    31,445.22x = 43,412.32 × 20,849.18
  4. Step 4: Simplify right side
    31,445.22x = 905,111,273.90
  5. Step 5: Solve for x
    x = 905,111,273.90/31,445.22
  6. Step 6: Final answer
    x = 28,783.75

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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.