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Finding the Fourth Proportional to 30,605.70, 45,917.12 and 10,886.25

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Solution

The fourth proportional to 30,605.70, 45,917.12 and 10,886.25 is: 16,332.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,605.70 : 45,917.12 = 10,886.25 : x
  2. Step 2: Convert to fraction form
    30,605.70/45,917.12 = 10,886.25/x
  3. Step 3: Cross multiply
    30,605.70x = 45,917.12 × 10,886.25
  4. Step 4: Simplify right side
    30,605.70x = 499,865,247.60
  5. Step 5: Solve for x
    x = 499,865,247.60/30,605.70
  6. Step 6: Final answer
    x = 16,332.42

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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.