Home / 13,219.13-19,828.70-3,985.13

Finding the Fourth Proportional to 13,219.13, 19,828.70 and 3,985.13

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Solution

The fourth proportional to 13,219.13, 19,828.70 and 3,985.13 is: 5,977.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.13 : 19,828.70 = 3,985.13 : x
  2. Step 2: Convert to fraction form
    13,219.13/19,828.70 = 3,985.13/x
  3. Step 3: Cross multiply
    13,219.13x = 19,828.70 × 3,985.13
  4. Step 4: Simplify right side
    13,219.13x = 79,019,828.16
  5. Step 5: Solve for x
    x = 79,019,828.16/13,219.13
  6. Step 6: Final answer
    x = 5,977.69

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Similar ratio
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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.