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Finding the Fourth Proportional to 21,353.60, 32,027.10 and 7,310.40

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Solution

The fourth proportional to 21,353.60, 32,027.10 and 7,310.40 is: 10,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.60 : 32,027.10 = 7,310.40 : x
  2. Step 2: Convert to fraction form
    21,353.60/32,027.10 = 7,310.40/x
  3. Step 3: Cross multiply
    21,353.60x = 32,027.10 × 7,310.40
  4. Step 4: Simplify right side
    21,353.60x = 234,130,911.84
  5. Step 5: Solve for x
    x = 234,130,911.84/21,353.60
  6. Step 6: Final answer
    x = 10,964.47

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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.