Home / 31,460.52-43,417.62-20,831.88

Finding the Fourth Proportional to 31,460.52, 43,417.62 and 20,831.88

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Solution

The fourth proportional to 31,460.52, 43,417.62 and 20,831.88 is: 28,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,460.52 : 43,417.62 = 20,831.88 : x
  2. Step 2: Convert to fraction form
    31,460.52/43,417.62 = 20,831.88/x
  3. Step 3: Cross multiply
    31,460.52x = 43,417.62 × 20,831.88
  4. Step 4: Simplify right side
    31,460.52x = 904,470,649.73
  5. Step 5: Solve for x
    x = 904,470,649.73/31,460.52
  6. Step 6: Final answer
    x = 28,749.39

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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.