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Finding the Fourth Proportional to 30,557.40, 45,836.13 and 8,370.97

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Solution

The fourth proportional to 30,557.40, 45,836.13 and 8,370.97 is: 12,556.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.40 : 45,836.13 = 8,370.97 : x
  2. Step 2: Convert to fraction form
    30,557.40/45,836.13 = 8,370.97/x
  3. Step 3: Cross multiply
    30,557.40x = 45,836.13 × 8,370.97
  4. Step 4: Simplify right side
    30,557.40x = 383,692,639.97
  5. Step 5: Solve for x
    x = 383,692,639.97/30,557.40
  6. Step 6: Final answer
    x = 12,556.46

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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.