Home / 13,240.02-18,271.13-7,190.38

Finding the Fourth Proportional to 13,240.02, 18,271.13 and 7,190.38

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Solution

The fourth proportional to 13,240.02, 18,271.13 and 7,190.38 is: 9,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.02 : 18,271.13 = 7,190.38 : x
  2. Step 2: Convert to fraction form
    13,240.02/18,271.13 = 7,190.38/x
  3. Step 3: Cross multiply
    13,240.02x = 18,271.13 × 7,190.38
  4. Step 4: Simplify right side
    13,240.02x = 131,376,367.73
  5. Step 5: Solve for x
    x = 131,376,367.73/13,240.02
  6. Step 6: Final answer
    x = 9,922.67

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Double scale
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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.