Home / 13,209.40-18,229.32-7,466.40

Finding the Fourth Proportional to 13,209.40, 18,229.32 and 7,466.40

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Solution

The fourth proportional to 13,209.40, 18,229.32 and 7,466.40 is: 10,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.40 : 18,229.32 = 7,466.40 : x
  2. Step 2: Convert to fraction form
    13,209.40/18,229.32 = 7,466.40/x
  3. Step 3: Cross multiply
    13,209.40x = 18,229.32 × 7,466.40
  4. Step 4: Simplify right side
    13,209.40x = 136,107,394.85
  5. Step 5: Solve for x
    x = 136,107,394.85/13,209.40
  6. Step 6: Final answer
    x = 10,303.83

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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.