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Finding the Fourth Proportional to 14,775.54, 20,388.40 and 9,035.88

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Solution

The fourth proportional to 14,775.54, 20,388.40 and 9,035.88 is: 12,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.54 : 20,388.40 = 9,035.88 : x
  2. Step 2: Convert to fraction form
    14,775.54/20,388.40 = 9,035.88/x
  3. Step 3: Cross multiply
    14,775.54x = 20,388.40 × 9,035.88
  4. Step 4: Simplify right side
    14,775.54x = 184,227,135.79
  5. Step 5: Solve for x
    x = 184,227,135.79/14,775.54
  6. Step 6: Final answer
    x = 12,468.39

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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.