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Finding the Fourth Proportional to 15,937.71, 21,999.48 and 9,650.07

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Solution

The fourth proportional to 15,937.71, 21,999.48 and 9,650.07 is: 13,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,937.71 : 21,999.48 = 9,650.07 : x
  2. Step 2: Convert to fraction form
    15,937.71/21,999.48 = 9,650.07/x
  3. Step 3: Cross multiply
    15,937.71x = 21,999.48 × 9,650.07
  4. Step 4: Simplify right side
    15,937.71x = 212,296,521.96
  5. Step 5: Solve for x
    x = 212,296,521.96/15,937.71
  6. Step 6: Final answer
    x = 13,320.39

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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.