Home / 31,025.22-42,829.32-19,853.70

Finding the Fourth Proportional to 31,025.22, 42,829.32 and 19,853.70

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Solution

The fourth proportional to 31,025.22, 42,829.32 and 19,853.70 is: 27,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.22 : 42,829.32 = 19,853.70 : x
  2. Step 2: Convert to fraction form
    31,025.22/42,829.32 = 19,853.70/x
  3. Step 3: Cross multiply
    31,025.22x = 42,829.32 × 19,853.70
  4. Step 4: Simplify right side
    31,025.22x = 850,320,470.48
  5. Step 5: Solve for x
    x = 850,320,470.48/31,025.22
  6. Step 6: Final answer
    x = 27,407.40

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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.