Home / 34,685.38-47,860.69-20,339.80

Finding the Fourth Proportional to 34,685.38, 47,860.69 and 20,339.80

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Solution

The fourth proportional to 34,685.38, 47,860.69 and 20,339.80 is: 28,065.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,685.38 : 47,860.69 = 20,339.80 : x
  2. Step 2: Convert to fraction form
    34,685.38/47,860.69 = 20,339.80/x
  3. Step 3: Cross multiply
    34,685.38x = 47,860.69 × 20,339.80
  4. Step 4: Simplify right side
    34,685.38x = 973,476,640.36
  5. Step 5: Solve for x
    x = 973,476,640.36/34,685.38
  6. Step 6: Final answer
    x = 28,065.91

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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.