Home / 30,685.26-42,348.87-18,756.57

Finding the Fourth Proportional to 30,685.26, 42,348.87 and 18,756.57

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Solution

The fourth proportional to 30,685.26, 42,348.87 and 18,756.57 is: 25,886.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.26 : 42,348.87 = 18,756.57 : x
  2. Step 2: Convert to fraction form
    30,685.26/42,348.87 = 18,756.57/x
  3. Step 3: Cross multiply
    30,685.26x = 42,348.87 × 18,756.57
  4. Step 4: Simplify right side
    30,685.26x = 794,319,544.58
  5. Step 5: Solve for x
    x = 794,319,544.58/30,685.26
  6. Step 6: Final answer
    x = 25,886.03

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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.