Home / 21,512.16-29,687.15-11,952.91

Finding the Fourth Proportional to 21,512.16, 29,687.15 and 11,952.91

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Solution

The fourth proportional to 21,512.16, 29,687.15 and 11,952.91 is: 16,495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.16 : 29,687.15 = 11,952.91 : x
  2. Step 2: Convert to fraction form
    21,512.16/29,687.15 = 11,952.91/x
  3. Step 3: Cross multiply
    21,512.16x = 29,687.15 × 11,952.91
  4. Step 4: Simplify right side
    21,512.16x = 354,847,832.11
  5. Step 5: Solve for x
    x = 354,847,832.11/21,512.16
  6. Step 6: Final answer
    x = 16,495.22

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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.