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Finding the Fourth Proportional to 30,476.82, 45,718.89 and 10,751.31

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Solution

The fourth proportional to 30,476.82, 45,718.89 and 10,751.31 is: 16,128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,476.82 : 45,718.89 = 10,751.31 : x
  2. Step 2: Convert to fraction form
    30,476.82/45,718.89 = 10,751.31/x
  3. Step 3: Cross multiply
    30,476.82x = 45,718.89 × 10,751.31
  4. Step 4: Simplify right side
    30,476.82x = 491,537,959.25
  5. Step 5: Solve for x
    x = 491,537,959.25/30,476.82
  6. Step 6: Final answer
    x = 16,128.26

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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.