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Finding the Fourth Proportional to 30,359.40, 41,894.16 and 16,931.54

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Solution

The fourth proportional to 30,359.40, 41,894.16 and 16,931.54 is: 23,364.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,359.40 : 41,894.16 = 16,931.54 : x
  2. Step 2: Convert to fraction form
    30,359.40/41,894.16 = 16,931.54/x
  3. Step 3: Cross multiply
    30,359.40x = 41,894.16 × 16,931.54
  4. Step 4: Simplify right side
    30,359.40x = 709,332,645.81
  5. Step 5: Solve for x
    x = 709,332,645.81/30,359.40
  6. Step 6: Final answer
    x = 23,364.51

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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.