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Finding the Fourth Proportional to 30,986.79, 46,479.81 and 11,265.18

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Solution

The fourth proportional to 30,986.79, 46,479.81 and 11,265.18 is: 16,897.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.79 : 46,479.81 = 11,265.18 : x
  2. Step 2: Convert to fraction form
    30,986.79/46,479.81 = 11,265.18/x
  3. Step 3: Cross multiply
    30,986.79x = 46,479.81 × 11,265.18
  4. Step 4: Simplify right side
    30,986.79x = 523,603,426.02
  5. Step 5: Solve for x
    x = 523,603,426.02/30,986.79
  6. Step 6: Final answer
    x = 16,897.63

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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.