Home / 19,284.40-28,943-13,751.28

Finding the Fourth Proportional to 19,284.40, 28,943 and 13,751.28

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Solution

The fourth proportional to 19,284.40, 28,943 and 13,751.28 is: 20,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,284.40 : 28,943 = 13,751.28 : x
  2. Step 2: Convert to fraction form
    19,284.40/28,943 = 13,751.28/x
  3. Step 3: Cross multiply
    19,284.40x = 28,943 × 13,751.28
  4. Step 4: Simplify right side
    19,284.40x = 398,003,297.04
  5. Step 5: Solve for x
    x = 398,003,297.04/19,284.40
  6. Step 6: Final answer
    x = 20,638.61

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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.