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Finding the Fourth Proportional to 30,613.80, 45,916.36 and 9,834.60

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Solution

The fourth proportional to 30,613.80, 45,916.36 and 9,834.60 is: 14,750.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,613.80 : 45,916.36 = 9,834.60 : x
  2. Step 2: Convert to fraction form
    30,613.80/45,916.36 = 9,834.60/x
  3. Step 3: Cross multiply
    30,613.80x = 45,916.36 × 9,834.60
  4. Step 4: Simplify right side
    30,613.80x = 451,569,034.06
  5. Step 5: Solve for x
    x = 451,569,034.06/30,613.80
  6. Step 6: Final answer
    x = 14,750.51

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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.