Home / 31,638.06-47,470.19-13,859.54

Finding the Fourth Proportional to 31,638.06, 47,470.19 and 13,859.54

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Solution

The fourth proportional to 31,638.06, 47,470.19 and 13,859.54 is: 20,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.06 : 47,470.19 = 13,859.54 : x
  2. Step 2: Convert to fraction form
    31,638.06/47,470.19 = 13,859.54/x
  3. Step 3: Cross multiply
    31,638.06x = 47,470.19 × 13,859.54
  4. Step 4: Simplify right side
    31,638.06x = 657,914,690.46
  5. Step 5: Solve for x
    x = 657,914,690.46/31,638.06
  6. Step 6: Final answer
    x = 20,795.04

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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.