Home / 13,907.09-20,853.72-8,648.71

Finding the Fourth Proportional to 13,907.09, 20,853.72 and 8,648.71

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Solution

The fourth proportional to 13,907.09, 20,853.72 and 8,648.71 is: 12,968.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.09 : 20,853.72 = 8,648.71 : x
  2. Step 2: Convert to fraction form
    13,907.09/20,853.72 = 8,648.71/x
  3. Step 3: Cross multiply
    13,907.09x = 20,853.72 × 8,648.71
  4. Step 4: Simplify right side
    13,907.09x = 180,357,724.57
  5. Step 5: Solve for x
    x = 180,357,724.57/13,907.09
  6. Step 6: Final answer
    x = 12,968.76

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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.