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Finding the Fourth Proportional to 30,955.40, 46,406.42 and 13,169.77

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Solution

The fourth proportional to 30,955.40, 46,406.42 and 13,169.77 is: 19,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,955.40 : 46,406.42 = 13,169.77 : x
  2. Step 2: Convert to fraction form
    30,955.40/46,406.42 = 13,169.77/x
  3. Step 3: Cross multiply
    30,955.40x = 46,406.42 × 13,169.77
  4. Step 4: Simplify right side
    30,955.40x = 611,162,006.48
  5. Step 5: Solve for x
    x = 611,162,006.48/30,955.40
  6. Step 6: Final answer
    x = 19,743.31

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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.