Home / 21,454.15-29,596.20-18,617.54

Finding the Fourth Proportional to 21,454.15, 29,596.20 and 18,617.54

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Solution

The fourth proportional to 21,454.15, 29,596.20 and 18,617.54 is: 25,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.15 : 29,596.20 = 18,617.54 : x
  2. Step 2: Convert to fraction form
    21,454.15/29,596.20 = 18,617.54/x
  3. Step 3: Cross multiply
    21,454.15x = 29,596.20 × 18,617.54
  4. Step 4: Simplify right side
    21,454.15x = 551,008,543.12
  5. Step 5: Solve for x
    x = 551,008,543.12/21,454.15
  6. Step 6: Final answer
    x = 25,683.08

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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.