Home / 15,745.44-21,705.12-10,430.96

Finding the Fourth Proportional to 15,745.44, 21,705.12 and 10,430.96

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Solution

The fourth proportional to 15,745.44, 21,705.12 and 10,430.96 is: 14,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.44 : 21,705.12 = 10,430.96 : x
  2. Step 2: Convert to fraction form
    15,745.44/21,705.12 = 10,430.96/x
  3. Step 3: Cross multiply
    15,745.44x = 21,705.12 × 10,430.96
  4. Step 4: Simplify right side
    15,745.44x = 226,405,238.52
  5. Step 5: Solve for x
    x = 226,405,238.52/15,745.44
  6. Step 6: Final answer
    x = 14,379.10

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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.