Home / 21,165.22-29,213.22-12,558.70

Finding the Fourth Proportional to 21,165.22, 29,213.22 and 12,558.70

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Solution

The fourth proportional to 21,165.22, 29,213.22 and 12,558.70 is: 17,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.22 : 29,213.22 = 12,558.70 : x
  2. Step 2: Convert to fraction form
    21,165.22/29,213.22 = 12,558.70/x
  3. Step 3: Cross multiply
    21,165.22x = 29,213.22 × 12,558.70
  4. Step 4: Simplify right side
    21,165.22x = 366,880,066.01
  5. Step 5: Solve for x
    x = 366,880,066.01/21,165.22
  6. Step 6: Final answer
    x = 17,334.10

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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.