Home / 31,305.87-43,188.53-20,710.26

Finding the Fourth Proportional to 31,305.87, 43,188.53 and 20,710.26

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Solution

The fourth proportional to 31,305.87, 43,188.53 and 20,710.26 is: 28,571.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,305.87 : 43,188.53 = 20,710.26 : x
  2. Step 2: Convert to fraction form
    31,305.87/43,188.53 = 20,710.26/x
  3. Step 3: Cross multiply
    31,305.87x = 43,188.53 × 20,710.26
  4. Step 4: Simplify right side
    31,305.87x = 894,445,581.77
  5. Step 5: Solve for x
    x = 894,445,581.77/31,305.87
  6. Step 6: Final answer
    x = 28,571.18

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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.