Home / 22,681.22-31,291.79-13,725.45

Finding the Fourth Proportional to 22,681.22, 31,291.79 and 13,725.45

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Solution

The fourth proportional to 22,681.22, 31,291.79 and 13,725.45 is: 18,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,681.22 : 31,291.79 = 13,725.45 : x
  2. Step 2: Convert to fraction form
    22,681.22/31,291.79 = 13,725.45/x
  3. Step 3: Cross multiply
    22,681.22x = 31,291.79 × 13,725.45
  4. Step 4: Simplify right side
    22,681.22x = 429,493,830.43
  5. Step 5: Solve for x
    x = 429,493,830.43/22,681.22
  6. Step 6: Final answer
    x = 18,936.10

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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.