Home / 31,447.32-47,187.21-13,929.54

Finding the Fourth Proportional to 31,447.32, 47,187.21 and 13,929.54

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Solution

The fourth proportional to 31,447.32, 47,187.21 and 13,929.54 is: 20,901.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.32 : 47,187.21 = 13,929.54 : x
  2. Step 2: Convert to fraction form
    31,447.32/47,187.21 = 13,929.54/x
  3. Step 3: Cross multiply
    31,447.32x = 47,187.21 × 13,929.54
  4. Step 4: Simplify right side
    31,447.32x = 657,296,129.18
  5. Step 5: Solve for x
    x = 657,296,129.18/31,447.32
  6. Step 6: Final answer
    x = 20,901.50

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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.