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Finding the Fourth Proportional to 15,133.78, 22,801.56 and 13,938.22

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Solution

The fourth proportional to 15,133.78, 22,801.56 and 13,938.22 is: 21,000.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.78 : 22,801.56 = 13,938.22 : x
  2. Step 2: Convert to fraction form
    15,133.78/22,801.56 = 13,938.22/x
  3. Step 3: Cross multiply
    15,133.78x = 22,801.56 × 13,938.22
  4. Step 4: Simplify right side
    15,133.78x = 317,813,159.62
  5. Step 5: Solve for x
    x = 317,813,159.62/15,133.78
  6. Step 6: Final answer
    x = 21,000.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.