Home / 21,796.80-29,985.20-19,095.86

Finding the Fourth Proportional to 21,796.80, 29,985.20 and 19,095.86

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Solution

The fourth proportional to 21,796.80, 29,985.20 and 19,095.86 is: 26,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,796.80 : 29,985.20 = 19,095.86 : x
  2. Step 2: Convert to fraction form
    21,796.80/29,985.20 = 19,095.86/x
  3. Step 3: Cross multiply
    21,796.80x = 29,985.20 × 19,095.86
  4. Step 4: Simplify right side
    21,796.80x = 572,593,181.27
  5. Step 5: Solve for x
    x = 572,593,181.27/21,796.80
  6. Step 6: Final answer
    x = 26,269.60

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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.