Home / 22,550.36-31,119.35-12,478.61

Finding the Fourth Proportional to 22,550.36, 31,119.35 and 12,478.61

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Solution

The fourth proportional to 22,550.36, 31,119.35 and 12,478.61 is: 17,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.36 : 31,119.35 = 12,478.61 : x
  2. Step 2: Convert to fraction form
    22,550.36/31,119.35 = 12,478.61/x
  3. Step 3: Cross multiply
    22,550.36x = 31,119.35 × 12,478.61
  4. Step 4: Simplify right side
    22,550.36x = 388,326,014.11
  5. Step 5: Solve for x
    x = 388,326,014.11/22,550.36
  6. Step 6: Final answer
    x = 17,220.39

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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.