Home / 13,128.45-19,686.87-4,806.30

Finding the Fourth Proportional to 13,128.45, 19,686.87 and 4,806.30

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Solution

The fourth proportional to 13,128.45, 19,686.87 and 4,806.30 is: 7,207.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.45 : 19,686.87 = 4,806.30 : x
  2. Step 2: Convert to fraction form
    13,128.45/19,686.87 = 4,806.30/x
  3. Step 3: Cross multiply
    13,128.45x = 19,686.87 × 4,806.30
  4. Step 4: Simplify right side
    13,128.45x = 94,621,003.28
  5. Step 5: Solve for x
    x = 94,621,003.28/13,128.45
  6. Step 6: Final answer
    x = 7,207.32

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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.