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Finding the Fourth Proportional to 30,435.71, 45,654.91 and 11,709.05

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Solution

The fourth proportional to 30,435.71, 45,654.91 and 11,709.05 is: 17,564.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,435.71 : 45,654.91 = 11,709.05 : x
  2. Step 2: Convert to fraction form
    30,435.71/45,654.91 = 11,709.05/x
  3. Step 3: Cross multiply
    30,435.71x = 45,654.91 × 11,709.05
  4. Step 4: Simplify right side
    30,435.71x = 534,575,366.39
  5. Step 5: Solve for x
    x = 534,575,366.39/30,435.71
  6. Step 6: Final answer
    x = 17,564.09

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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.