Home / 13,098.35-18,074.99-7,129.67

Finding the Fourth Proportional to 13,098.35, 18,074.99 and 7,129.67

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Solution

The fourth proportional to 13,098.35, 18,074.99 and 7,129.67 is: 9,838.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.35 : 18,074.99 = 7,129.67 : x
  2. Step 2: Convert to fraction form
    13,098.35/18,074.99 = 7,129.67/x
  3. Step 3: Cross multiply
    13,098.35x = 18,074.99 × 7,129.67
  4. Step 4: Simplify right side
    13,098.35x = 128,868,623.58
  5. Step 5: Solve for x
    x = 128,868,623.58/13,098.35
  6. Step 6: Final answer
    x = 9,838.54

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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.