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Finding the Fourth Proportional to 21,913.64, 32,863.50 and 7,119.14

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Solution

The fourth proportional to 21,913.64, 32,863.50 and 7,119.14 is: 10,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.64 : 32,863.50 = 7,119.14 : x
  2. Step 2: Convert to fraction form
    21,913.64/32,863.50 = 7,119.14/x
  3. Step 3: Cross multiply
    21,913.64x = 32,863.50 × 7,119.14
  4. Step 4: Simplify right side
    21,913.64x = 233,959,857.39
  5. Step 5: Solve for x
    x = 233,959,857.39/21,913.64
  6. Step 6: Final answer
    x = 10,676.45

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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.