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Finding the Fourth Proportional to 10,530.90, 14,532.48 and 5,815.44

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Solution

The fourth proportional to 10,530.90, 14,532.48 and 5,815.44 is: 8,025.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,530.90 : 14,532.48 = 5,815.44 : x
  2. Step 2: Convert to fraction form
    10,530.90/14,532.48 = 5,815.44/x
  3. Step 3: Cross multiply
    10,530.90x = 14,532.48 × 5,815.44
  4. Step 4: Simplify right side
    10,530.90x = 84,512,765.49
  5. Step 5: Solve for x
    x = 84,512,765.49/10,530.90
  6. Step 6: Final answer
    x = 8,025.22

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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.