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Finding the Fourth Proportional to 28,592.34, 42,905.34 and 11,951.07

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Solution

The fourth proportional to 28,592.34, 42,905.34 and 11,951.07 is: 17,933.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,592.34 : 42,905.34 = 11,951.07 : x
  2. Step 2: Convert to fraction form
    28,592.34/42,905.34 = 11,951.07/x
  3. Step 3: Cross multiply
    28,592.34x = 42,905.34 × 11,951.07
  4. Step 4: Simplify right side
    28,592.34x = 512,764,721.71
  5. Step 5: Solve for x
    x = 512,764,721.71/28,592.34
  6. Step 6: Final answer
    x = 17,933.64

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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.