Home / 13,055.80-18,012.62-8,342.84

Finding the Fourth Proportional to 13,055.80, 18,012.62 and 8,342.84

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Solution

The fourth proportional to 13,055.80, 18,012.62 and 8,342.84 is: 11,510.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.80 : 18,012.62 = 8,342.84 : x
  2. Step 2: Convert to fraction form
    13,055.80/18,012.62 = 8,342.84/x
  3. Step 3: Cross multiply
    13,055.80x = 18,012.62 × 8,342.84
  4. Step 4: Simplify right side
    13,055.80x = 150,276,406.64
  5. Step 5: Solve for x
    x = 150,276,406.64/13,055.80
  6. Step 6: Final answer
    x = 11,510.32

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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.