Home / 21,110.43-29,132.88-12,156.51

Finding the Fourth Proportional to 21,110.43, 29,132.88 and 12,156.51

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Solution

The fourth proportional to 21,110.43, 29,132.88 and 12,156.51 is: 16,776.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.43 : 29,132.88 = 12,156.51 : x
  2. Step 2: Convert to fraction form
    21,110.43/29,132.88 = 12,156.51/x
  3. Step 3: Cross multiply
    21,110.43x = 29,132.88 × 12,156.51
  4. Step 4: Simplify right side
    21,110.43x = 354,154,147.05
  5. Step 5: Solve for x
    x = 354,154,147.05/21,110.43
  6. Step 6: Final answer
    x = 16,776.26

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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.