Home / 22,930.56-31,643.78-12,858.98

Finding the Fourth Proportional to 22,930.56, 31,643.78 and 12,858.98

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Solution

The fourth proportional to 22,930.56, 31,643.78 and 12,858.98 is: 17,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,930.56 : 31,643.78 = 12,858.98 : x
  2. Step 2: Convert to fraction form
    22,930.56/31,643.78 = 12,858.98/x
  3. Step 3: Cross multiply
    22,930.56x = 31,643.78 × 12,858.98
  4. Step 4: Simplify right side
    22,930.56x = 406,906,511.63
  5. Step 5: Solve for x
    x = 406,906,511.63/22,930.56
  6. Step 6: Final answer
    x = 17,745.16

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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.