Home / 22,558.41-31,129.31-12,486.25

Finding the Fourth Proportional to 22,558.41, 31,129.31 and 12,486.25

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Solution

The fourth proportional to 22,558.41, 31,129.31 and 12,486.25 is: 17,230.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.41 : 31,129.31 = 12,486.25 : x
  2. Step 2: Convert to fraction form
    22,558.41/31,129.31 = 12,486.25/x
  3. Step 3: Cross multiply
    22,558.41x = 31,129.31 × 12,486.25
  4. Step 4: Simplify right side
    22,558.41x = 388,688,346.99
  5. Step 5: Solve for x
    x = 388,688,346.99/22,558.41
  6. Step 6: Final answer
    x = 17,230.31

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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.