Home / 19,140.51-28,690.27-9,266.21

Finding the Fourth Proportional to 19,140.51, 28,690.27 and 9,266.21

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Solution

The fourth proportional to 19,140.51, 28,690.27 and 9,266.21 is: 13,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.51 : 28,690.27 = 9,266.21 : x
  2. Step 2: Convert to fraction form
    19,140.51/28,690.27 = 9,266.21/x
  3. Step 3: Cross multiply
    19,140.51x = 28,690.27 × 9,266.21
  4. Step 4: Simplify right side
    19,140.51x = 265,850,007.75
  5. Step 5: Solve for x
    x = 265,850,007.75/19,140.51
  6. Step 6: Final answer
    x = 13,889.39

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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.