Home / 19,745.60-29,569.80-9,345.20

Finding the Fourth Proportional to 19,745.60, 29,569.80 and 9,345.20

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Solution

The fourth proportional to 19,745.60, 29,569.80 and 9,345.20 is: 13,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,745.60 : 29,569.80 = 9,345.20 : x
  2. Step 2: Convert to fraction form
    19,745.60/29,569.80 = 9,345.20/x
  3. Step 3: Cross multiply
    19,745.60x = 29,569.80 × 9,345.20
  4. Step 4: Simplify right side
    19,745.60x = 276,335,694.96
  5. Step 5: Solve for x
    x = 276,335,694.96/19,745.60
  6. Step 6: Final answer
    x = 13,994.80

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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.