Home / 13,180.02-18,188.40-7,211.67

Finding the Fourth Proportional to 13,180.02, 18,188.40 and 7,211.67

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Solution

The fourth proportional to 13,180.02, 18,188.40 and 7,211.67 is: 9,952.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.02 : 18,188.40 = 7,211.67 : x
  2. Step 2: Convert to fraction form
    13,180.02/18,188.40 = 7,211.67/x
  3. Step 3: Cross multiply
    13,180.02x = 18,188.40 × 7,211.67
  4. Step 4: Simplify right side
    13,180.02x = 131,168,738.63
  5. Step 5: Solve for x
    x = 131,168,738.63/13,180.02
  6. Step 6: Final answer
    x = 9,952.09

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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.