Home / 20,833.81-28,745.28-12,336.10

Finding the Fourth Proportional to 20,833.81, 28,745.28 and 12,336.10

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Solution

The fourth proportional to 20,833.81, 28,745.28 and 12,336.10 is: 17,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.81 : 28,745.28 = 12,336.10 : x
  2. Step 2: Convert to fraction form
    20,833.81/28,745.28 = 12,336.10/x
  3. Step 3: Cross multiply
    20,833.81x = 28,745.28 × 12,336.10
  4. Step 4: Simplify right side
    20,833.81x = 354,604,576.74
  5. Step 5: Solve for x
    x = 354,604,576.74/20,833.81
  6. Step 6: Final answer
    x = 17,020.63

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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.