Home / 13,286.42-18,336.55-9,923.40

Finding the Fourth Proportional to 13,286.42, 18,336.55 and 9,923.40

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Solution

The fourth proportional to 13,286.42, 18,336.55 and 9,923.40 is: 13,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.42 : 18,336.55 = 9,923.40 : x
  2. Step 2: Convert to fraction form
    13,286.42/18,336.55 = 9,923.40/x
  3. Step 3: Cross multiply
    13,286.42x = 18,336.55 × 9,923.40
  4. Step 4: Simplify right side
    13,286.42x = 181,960,899.24
  5. Step 5: Solve for x
    x = 181,960,899.24/13,286.42
  6. Step 6: Final answer
    x = 13,695.25

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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.