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Finding the Fourth Proportional to 30,573.70, 45,860.61 and 8,387.39

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Solution

The fourth proportional to 30,573.70, 45,860.61 and 8,387.39 is: 12,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,573.70 : 45,860.61 = 8,387.39 : x
  2. Step 2: Convert to fraction form
    30,573.70/45,860.61 = 8,387.39/x
  3. Step 3: Cross multiply
    30,573.70x = 45,860.61 × 8,387.39
  4. Step 4: Simplify right side
    30,573.70x = 384,650,821.71
  5. Step 5: Solve for x
    x = 384,650,821.71/30,573.70
  6. Step 6: Final answer
    x = 12,581.10

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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.