Home / 13,184.39-18,189.94-7,515.05

Finding the Fourth Proportional to 13,184.39, 18,189.94 and 7,515.05

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Solution

The fourth proportional to 13,184.39, 18,189.94 and 7,515.05 is: 10,368.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,184.39 : 18,189.94 = 7,515.05 : x
  2. Step 2: Convert to fraction form
    13,184.39/18,189.94 = 7,515.05/x
  3. Step 3: Cross multiply
    13,184.39x = 18,189.94 × 7,515.05
  4. Step 4: Simplify right side
    13,184.39x = 136,698,180.07
  5. Step 5: Solve for x
    x = 136,698,180.07/13,184.39
  6. Step 6: Final answer
    x = 10,368.18

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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.