Home / 31,288.75-43,178.48-18,713.50

Finding the Fourth Proportional to 31,288.75, 43,178.48 and 18,713.50

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Solution

The fourth proportional to 31,288.75, 43,178.48 and 18,713.50 is: 25,824.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,288.75 : 43,178.48 = 18,713.50 : x
  2. Step 2: Convert to fraction form
    31,288.75/43,178.48 = 18,713.50/x
  3. Step 3: Cross multiply
    31,288.75x = 43,178.48 × 18,713.50
  4. Step 4: Simplify right side
    31,288.75x = 808,020,485.48
  5. Step 5: Solve for x
    x = 808,020,485.48/31,288.75
  6. Step 6: Final answer
    x = 25,824.63

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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.