Home / 19,019.76-28,517.44-9,139.36

Finding the Fourth Proportional to 19,019.76, 28,517.44 and 9,139.36

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Solution

The fourth proportional to 19,019.76, 28,517.44 and 9,139.36 is: 13,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.76 : 28,517.44 = 9,139.36 : x
  2. Step 2: Convert to fraction form
    19,019.76/28,517.44 = 9,139.36/x
  3. Step 3: Cross multiply
    19,019.76x = 28,517.44 × 9,139.36
  4. Step 4: Simplify right side
    19,019.76x = 260,631,150.44
  5. Step 5: Solve for x
    x = 260,631,150.44/19,019.76
  6. Step 6: Final answer
    x = 13,703.18

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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.