Home / 21,495.20-29,662.86-12,062.78

Finding the Fourth Proportional to 21,495.20, 29,662.86 and 12,062.78

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Solution

The fourth proportional to 21,495.20, 29,662.86 and 12,062.78 is: 16,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.20 : 29,662.86 = 12,062.78 : x
  2. Step 2: Convert to fraction form
    21,495.20/29,662.86 = 12,062.78/x
  3. Step 3: Cross multiply
    21,495.20x = 29,662.86 × 12,062.78
  4. Step 4: Simplify right side
    21,495.20x = 357,816,554.35
  5. Step 5: Solve for x
    x = 357,816,554.35/21,495.20
  6. Step 6: Final answer
    x = 16,646.35

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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.