Home / 13,620.26-18,783.48-8,835.20

Finding the Fourth Proportional to 13,620.26, 18,783.48 and 8,835.20

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Solution

The fourth proportional to 13,620.26, 18,783.48 and 8,835.20 is: 12,184.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.26 : 18,783.48 = 8,835.20 : x
  2. Step 2: Convert to fraction form
    13,620.26/18,783.48 = 8,835.20/x
  3. Step 3: Cross multiply
    13,620.26x = 18,783.48 × 8,835.20
  4. Step 4: Simplify right side
    13,620.26x = 165,955,802.50
  5. Step 5: Solve for x
    x = 165,955,802.50/13,620.26
  6. Step 6: Final answer
    x = 12,184.48

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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.