Home / 13,290.66-18,340.80-8,574.96

Finding the Fourth Proportional to 13,290.66, 18,340.80 and 8,574.96

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Solution

The fourth proportional to 13,290.66, 18,340.80 and 8,574.96 is: 11,833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.66 : 18,340.80 = 8,574.96 : x
  2. Step 2: Convert to fraction form
    13,290.66/18,340.80 = 8,574.96/x
  3. Step 3: Cross multiply
    13,290.66x = 18,340.80 × 8,574.96
  4. Step 4: Simplify right side
    13,290.66x = 157,271,626.37
  5. Step 5: Solve for x
    x = 157,271,626.37/13,290.66
  6. Step 6: Final answer
    x = 11,833.24

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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.