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Finding the Fourth Proportional to 55,242.46, 82,863.64 and 13,689.46

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Solution

The fourth proportional to 55,242.46, 82,863.64 and 13,689.46 is: 20,534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,242.46 : 82,863.64 = 13,689.46 : x
  2. Step 2: Convert to fraction form
    55,242.46/82,863.64 = 13,689.46/x
  3. Step 3: Cross multiply
    55,242.46x = 82,863.64 × 13,689.46
  4. Step 4: Simplify right side
    55,242.46x = 1,134,358,485.23
  5. Step 5: Solve for x
    x = 1,134,358,485.23/55,242.46
  6. Step 6: Final answer
    x = 20,534.18

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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.