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Finding the Fourth Proportional to 30,557.89, 45,836.88 and 8,371.47

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Solution

The fourth proportional to 30,557.89, 45,836.88 and 8,371.47 is: 12,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.89 : 45,836.88 = 8,371.47 : x
  2. Step 2: Convert to fraction form
    30,557.89/45,836.88 = 8,371.47/x
  3. Step 3: Cross multiply
    30,557.89x = 45,836.88 × 8,371.47
  4. Step 4: Simplify right side
    30,557.89x = 383,722,065.81
  5. Step 5: Solve for x
    x = 383,722,065.81/30,557.89
  6. Step 6: Final answer
    x = 12,557.22

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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.