Home / 31,356.96-47,018.88-13,818.48

Finding the Fourth Proportional to 31,356.96, 47,018.88 and 13,818.48

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Solution

The fourth proportional to 31,356.96, 47,018.88 and 13,818.48 is: 20,720.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356.96 : 47,018.88 = 13,818.48 : x
  2. Step 2: Convert to fraction form
    31,356.96/47,018.88 = 13,818.48/x
  3. Step 3: Cross multiply
    31,356.96x = 47,018.88 × 13,818.48
  4. Step 4: Simplify right side
    31,356.96x = 649,729,452.90
  5. Step 5: Solve for x
    x = 649,729,452.90/31,356.96
  6. Step 6: Final answer
    x = 20,720.42

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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.