Home / 21,146.10-29,182.80-12,074.14

Finding the Fourth Proportional to 21,146.10, 29,182.80 and 12,074.14

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Solution

The fourth proportional to 21,146.10, 29,182.80 and 12,074.14 is: 16,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.10 : 29,182.80 = 12,074.14 : x
  2. Step 2: Convert to fraction form
    21,146.10/29,182.80 = 12,074.14/x
  3. Step 3: Cross multiply
    21,146.10x = 29,182.80 × 12,074.14
  4. Step 4: Simplify right side
    21,146.10x = 352,357,212.79
  5. Step 5: Solve for x
    x = 352,357,212.79/21,146.10
  6. Step 6: Final answer
    x = 16,662.99

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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.