Home / 13,520.16-20,282.40-4,284

Finding the Fourth Proportional to 13,520.16, 20,282.40 and 4,284

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Solution

The fourth proportional to 13,520.16, 20,282.40 and 4,284 is: 6,426.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.16 : 20,282.40 = 4,284 : x
  2. Step 2: Convert to fraction form
    13,520.16/20,282.40 = 4,284/x
  3. Step 3: Cross multiply
    13,520.16x = 20,282.40 × 4,284
  4. Step 4: Simplify right side
    13,520.16x = 86,889,801.60
  5. Step 5: Solve for x
    x = 86,889,801.60/13,520.16
  6. Step 6: Final answer
    x = 6,426.68

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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.