Home / 13,405.80-18,518.04-10,300.80

Finding the Fourth Proportional to 13,405.80, 18,518.04 and 10,300.80

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Solution

The fourth proportional to 13,405.80, 18,518.04 and 10,300.80 is: 14,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.80 : 18,518.04 = 10,300.80 : x
  2. Step 2: Convert to fraction form
    13,405.80/18,518.04 = 10,300.80/x
  3. Step 3: Cross multiply
    13,405.80x = 18,518.04 × 10,300.80
  4. Step 4: Simplify right side
    13,405.80x = 190,750,626.43
  5. Step 5: Solve for x
    x = 190,750,626.43/13,405.80
  6. Step 6: Final answer
    x = 14,228.96

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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.