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Finding the Fourth Proportional to 28,483.67, 42,713.21 and 9,765.54

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Solution

The fourth proportional to 28,483.67, 42,713.21 and 9,765.54 is: 14,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.67 : 42,713.21 = 9,765.54 : x
  2. Step 2: Convert to fraction form
    28,483.67/42,713.21 = 9,765.54/x
  3. Step 3: Cross multiply
    28,483.67x = 42,713.21 × 9,765.54
  4. Step 4: Simplify right side
    28,483.67x = 417,117,585.20
  5. Step 5: Solve for x
    x = 417,117,585.20/28,483.67
  6. Step 6: Final answer
    x = 14,644.09

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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.