Home / 13,513.32-20,280.38-5,728.36

Finding the Fourth Proportional to 13,513.32, 20,280.38 and 5,728.36

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Solution

The fourth proportional to 13,513.32, 20,280.38 and 5,728.36 is: 8,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.32 : 20,280.38 = 5,728.36 : x
  2. Step 2: Convert to fraction form
    13,513.32/20,280.38 = 5,728.36/x
  3. Step 3: Cross multiply
    13,513.32x = 20,280.38 × 5,728.36
  4. Step 4: Simplify right side
    13,513.32x = 116,173,317.58
  5. Step 5: Solve for x
    x = 116,173,317.58/13,513.32
  6. Step 6: Final answer
    x = 8,596.95

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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.