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Finding the Fourth Proportional to 30,979.46, 46,472.55 and 9,914.55

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Solution

The fourth proportional to 30,979.46, 46,472.55 and 9,914.55 is: 14,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.46 : 46,472.55 = 9,914.55 : x
  2. Step 2: Convert to fraction form
    30,979.46/46,472.55 = 9,914.55/x
  3. Step 3: Cross multiply
    30,979.46x = 46,472.55 × 9,914.55
  4. Step 4: Simplify right side
    30,979.46x = 460,754,420.60
  5. Step 5: Solve for x
    x = 460,754,420.60/30,979.46
  6. Step 6: Final answer
    x = 14,872.90

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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.