Home / 13,128.40-19,686.96-4,805.68

Finding the Fourth Proportional to 13,128.40, 19,686.96 and 4,805.68

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Solution

The fourth proportional to 13,128.40, 19,686.96 and 4,805.68 is: 7,206.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.40 : 19,686.96 = 4,805.68 : x
  2. Step 2: Convert to fraction form
    13,128.40/19,686.96 = 4,805.68/x
  3. Step 3: Cross multiply
    13,128.40x = 19,686.96 × 4,805.68
  4. Step 4: Simplify right side
    13,128.40x = 94,609,229.93
  5. Step 5: Solve for x
    x = 94,609,229.93/13,128.40
  6. Step 6: Final answer
    x = 7,206.46

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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.