Home / 15,004.19-20,704.71-8,289.74

Finding the Fourth Proportional to 15,004.19, 20,704.71 and 8,289.74

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Solution

The fourth proportional to 15,004.19, 20,704.71 and 8,289.74 is: 11,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.19 : 20,704.71 = 8,289.74 : x
  2. Step 2: Convert to fraction form
    15,004.19/20,704.71 = 8,289.74/x
  3. Step 3: Cross multiply
    15,004.19x = 20,704.71 × 8,289.74
  4. Step 4: Simplify right side
    15,004.19x = 171,636,745.52
  5. Step 5: Solve for x
    x = 171,636,745.52/15,004.19
  6. Step 6: Final answer
    x = 11,439.26

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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.