Home / 13,518.59-20,280.85-4,159.28

Finding the Fourth Proportional to 13,518.59, 20,280.85 and 4,159.28

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Solution

The fourth proportional to 13,518.59, 20,280.85 and 4,159.28 is: 6,239.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.59 : 20,280.85 = 4,159.28 : x
  2. Step 2: Convert to fraction form
    13,518.59/20,280.85 = 4,159.28/x
  3. Step 3: Cross multiply
    13,518.59x = 20,280.85 × 4,159.28
  4. Step 4: Simplify right side
    13,518.59x = 84,353,774.09
  5. Step 5: Solve for x
    x = 84,353,774.09/13,518.59
  6. Step 6: Final answer
    x = 6,239.84

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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.