Home / 19,210.75-28,809.19-8,118.29

Finding the Fourth Proportional to 19,210.75, 28,809.19 and 8,118.29

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Solution

The fourth proportional to 19,210.75, 28,809.19 and 8,118.29 is: 12,174.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.75 : 28,809.19 = 8,118.29 : x
  2. Step 2: Convert to fraction form
    19,210.75/28,809.19 = 8,118.29/x
  3. Step 3: Cross multiply
    19,210.75x = 28,809.19 × 8,118.29
  4. Step 4: Simplify right side
    19,210.75x = 233,881,359.09
  5. Step 5: Solve for x
    x = 233,881,359.09/19,210.75
  6. Step 6: Final answer
    x = 12,174.50

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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.