Home / 13,219.76-19,832.40-5,429.24

Finding the Fourth Proportional to 13,219.76, 19,832.40 and 5,429.24

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Solution

The fourth proportional to 13,219.76, 19,832.40 and 5,429.24 is: 8,144.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.76 : 19,832.40 = 5,429.24 : x
  2. Step 2: Convert to fraction form
    13,219.76/19,832.40 = 5,429.24/x
  3. Step 3: Cross multiply
    13,219.76x = 19,832.40 × 5,429.24
  4. Step 4: Simplify right side
    13,219.76x = 107,674,859.38
  5. Step 5: Solve for x
    x = 107,674,859.38/13,219.76
  6. Step 6: Final answer
    x = 8,144.99

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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.