Home / 21,102.96-29,184.93-18,861.30

Finding the Fourth Proportional to 21,102.96, 29,184.93 and 18,861.30

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Solution

The fourth proportional to 21,102.96, 29,184.93 and 18,861.30 is: 26,084.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.96 : 29,184.93 = 18,861.30 : x
  2. Step 2: Convert to fraction form
    21,102.96/29,184.93 = 18,861.30/x
  3. Step 3: Cross multiply
    21,102.96x = 29,184.93 × 18,861.30
  4. Step 4: Simplify right side
    21,102.96x = 550,465,720.21
  5. Step 5: Solve for x
    x = 550,465,720.21/21,102.96
  6. Step 6: Final answer
    x = 26,084.76

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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.