Home / 22,640.88-31,239.54-13,686.60

Finding the Fourth Proportional to 22,640.88, 31,239.54 and 13,686.60

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Solution

The fourth proportional to 22,640.88, 31,239.54 and 13,686.60 is: 18,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,640.88 : 31,239.54 = 13,686.60 : x
  2. Step 2: Convert to fraction form
    22,640.88/31,239.54 = 13,686.60/x
  3. Step 3: Cross multiply
    22,640.88x = 31,239.54 × 13,686.60
  4. Step 4: Simplify right side
    22,640.88x = 427,563,088.16
  5. Step 5: Solve for x
    x = 427,563,088.16/22,640.88
  6. Step 6: Final answer
    x = 18,884.56

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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.