Home / 13,426.33-18,530.09-8,392.18

Finding the Fourth Proportional to 13,426.33, 18,530.09 and 8,392.18

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Solution

The fourth proportional to 13,426.33, 18,530.09 and 8,392.18 is: 11,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.33 : 18,530.09 = 8,392.18 : x
  2. Step 2: Convert to fraction form
    13,426.33/18,530.09 = 8,392.18/x
  3. Step 3: Cross multiply
    13,426.33x = 18,530.09 × 8,392.18
  4. Step 4: Simplify right side
    13,426.33x = 155,507,808.74
  5. Step 5: Solve for x
    x = 155,507,808.74/13,426.33
  6. Step 6: Final answer
    x = 11,582.30

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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.