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Finding the Fourth Proportional to 30,332.81, 41,885.08 and 19,021.25

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Solution

The fourth proportional to 30,332.81, 41,885.08 and 19,021.25 is: 26,265.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,332.81 : 41,885.08 = 19,021.25 : x
  2. Step 2: Convert to fraction form
    30,332.81/41,885.08 = 19,021.25/x
  3. Step 3: Cross multiply
    30,332.81x = 41,885.08 × 19,021.25
  4. Step 4: Simplify right side
    30,332.81x = 796,706,635.11
  5. Step 5: Solve for x
    x = 796,706,635.11/30,332.81
  6. Step 6: Final answer
    x = 26,265.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.