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Finding the Fourth Proportional to 15,905.62, 21,948.73 and 9,937

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Solution

The fourth proportional to 15,905.62, 21,948.73 and 9,937 is: 13,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.62 : 21,948.73 = 9,937 : x
  2. Step 2: Convert to fraction form
    15,905.62/21,948.73 = 9,937/x
  3. Step 3: Cross multiply
    15,905.62x = 21,948.73 × 9,937
  4. Step 4: Simplify right side
    15,905.62x = 218,104,530.01
  5. Step 5: Solve for x
    x = 218,104,530.01/15,905.62
  6. Step 6: Final answer
    x = 13,712.42

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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.