Home / 19,015.74-28,511.46-9,135.36

Finding the Fourth Proportional to 19,015.74, 28,511.46 and 9,135.36

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Solution

The fourth proportional to 19,015.74, 28,511.46 and 9,135.36 is: 13,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.74 : 28,511.46 = 9,135.36 : x
  2. Step 2: Convert to fraction form
    19,015.74/28,511.46 = 9,135.36/x
  3. Step 3: Cross multiply
    19,015.74x = 28,511.46 × 9,135.36
  4. Step 4: Simplify right side
    19,015.74x = 260,462,451.23
  5. Step 5: Solve for x
    x = 260,462,451.23/19,015.74
  6. Step 6: Final answer
    x = 13,697.20

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1.5x scale

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.