Home / 30,631.79-45,950.25-8,445.15

Finding the Fourth Proportional to 30,631.79, 45,950.25 and 8,445.15

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Solution

The fourth proportional to 30,631.79, 45,950.25 and 8,445.15 is: 12,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631.79 : 45,950.25 = 8,445.15 : x
  2. Step 2: Convert to fraction form
    30,631.79/45,950.25 = 8,445.15/x
  3. Step 3: Cross multiply
    30,631.79x = 45,950.25 × 8,445.15
  4. Step 4: Simplify right side
    30,631.79x = 388,056,753.79
  5. Step 5: Solve for x
    x = 388,056,753.79/30,631.79
  6. Step 6: Final answer
    x = 12,668.43

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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.