Home / 22,558.90-31,133.96-13,127.44

Finding the Fourth Proportional to 22,558.90, 31,133.96 and 13,127.44

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Solution

The fourth proportional to 22,558.90, 31,133.96 and 13,127.44 is: 18,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.90 : 31,133.96 = 13,127.44 : x
  2. Step 2: Convert to fraction form
    22,558.90/31,133.96 = 13,127.44/x
  3. Step 3: Cross multiply
    22,558.90x = 31,133.96 × 13,127.44
  4. Step 4: Simplify right side
    22,558.90x = 408,709,191.86
  5. Step 5: Solve for x
    x = 408,709,191.86/22,558.90
  6. Step 6: Final answer
    x = 18,117.43

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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.