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Finding the Fourth Proportional to 30,339.62, 45,509.38 and 8,152.99

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Solution

The fourth proportional to 30,339.62, 45,509.38 and 8,152.99 is: 12,229.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.62 : 45,509.38 = 8,152.99 : x
  2. Step 2: Convert to fraction form
    30,339.62/45,509.38 = 8,152.99/x
  3. Step 3: Cross multiply
    30,339.62x = 45,509.38 × 8,152.99
  4. Step 4: Simplify right side
    30,339.62x = 371,037,721.28
  5. Step 5: Solve for x
    x = 371,037,721.28/30,339.62
  6. Step 6: Final answer
    x = 12,229.48

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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.