Home / 21,184.56-29,230.64-12,112.80

Finding the Fourth Proportional to 21,184.56, 29,230.64 and 12,112.80

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Solution

The fourth proportional to 21,184.56, 29,230.64 and 12,112.80 is: 16,713.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.56 : 29,230.64 = 12,112.80 : x
  2. Step 2: Convert to fraction form
    21,184.56/29,230.64 = 12,112.80/x
  3. Step 3: Cross multiply
    21,184.56x = 29,230.64 × 12,112.80
  4. Step 4: Simplify right side
    21,184.56x = 354,064,896.19
  5. Step 5: Solve for x
    x = 354,064,896.19/21,184.56
  6. Step 6: Final answer
    x = 16,713.35

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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.