Home / 21,035.88-29,031.89-11,963.32

Finding the Fourth Proportional to 21,035.88, 29,031.89 and 11,963.32

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Solution

The fourth proportional to 21,035.88, 29,031.89 and 11,963.32 is: 16,510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.88 : 29,031.89 = 11,963.32 : x
  2. Step 2: Convert to fraction form
    21,035.88/29,031.89 = 11,963.32/x
  3. Step 3: Cross multiply
    21,035.88x = 29,031.89 × 11,963.32
  4. Step 4: Simplify right side
    21,035.88x = 347,317,657.88
  5. Step 5: Solve for x
    x = 347,317,657.88/21,035.88
  6. Step 6: Final answer
    x = 16,510.73

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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.