Home / 30,432.13-42,008.04-27,239.78

Finding the Fourth Proportional to 30,432.13, 42,008.04 and 27,239.78

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Solution

The fourth proportional to 30,432.13, 42,008.04 and 27,239.78 is: 37,601.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,432.13 : 42,008.04 = 27,239.78 : x
  2. Step 2: Convert to fraction form
    30,432.13/42,008.04 = 27,239.78/x
  3. Step 3: Cross multiply
    30,432.13x = 42,008.04 × 27,239.78
  4. Step 4: Simplify right side
    30,432.13x = 1,144,289,872.85
  5. Step 5: Solve for x
    x = 1,144,289,872.85/30,432.13
  6. Step 6: Final answer
    x = 37,601.38

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Double scale
Find fourth proportional to 30,433.13, 42,009.42 and 27,240.78
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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.