Home / 21,083.60-31,654.20-10,702.64

Finding the Fourth Proportional to 21,083.60, 31,654.20 and 10,702.64

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Solution

The fourth proportional to 21,083.60, 31,654.20 and 10,702.64 is: 16,068.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.60 : 31,654.20 = 10,702.64 : x
  2. Step 2: Convert to fraction form
    21,083.60/31,654.20 = 10,702.64/x
  3. Step 3: Cross multiply
    21,083.60x = 31,654.20 × 10,702.64
  4. Step 4: Simplify right side
    21,083.60x = 338,783,507.09
  5. Step 5: Solve for x
    x = 338,783,507.09/21,083.60
  6. Step 6: Final answer
    x = 16,068.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.