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Finding the Fourth Proportional to 30,759.70, 46,139.55 and 15,207.70

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Solution

The fourth proportional to 30,759.70, 46,139.55 and 15,207.70 is: 22,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,759.70 : 46,139.55 = 15,207.70 : x
  2. Step 2: Convert to fraction form
    30,759.70/46,139.55 = 15,207.70/x
  3. Step 3: Cross multiply
    30,759.70x = 46,139.55 × 15,207.70
  4. Step 4: Simplify right side
    30,759.70x = 701,676,434.54
  5. Step 5: Solve for x
    x = 701,676,434.54/30,759.70
  6. Step 6: Final answer
    x = 22,811.55

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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.