Home / 15,515.20-23,247.20-13,211.20

Finding the Fourth Proportional to 15,515.20, 23,247.20 and 13,211.20

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Solution

The fourth proportional to 15,515.20, 23,247.20 and 13,211.20 is: 19,795.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.20 : 23,247.20 = 13,211.20 : x
  2. Step 2: Convert to fraction form
    15,515.20/23,247.20 = 13,211.20/x
  3. Step 3: Cross multiply
    15,515.20x = 23,247.20 × 13,211.20
  4. Step 4: Simplify right side
    15,515.20x = 307,123,408.64
  5. Step 5: Solve for x
    x = 307,123,408.64/15,515.20
  6. Step 6: Final answer
    x = 19,795.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.