Home / 19,208.70-28,810.89-7,518.78

Finding the Fourth Proportional to 19,208.70, 28,810.89 and 7,518.78

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Solution

The fourth proportional to 19,208.70, 28,810.89 and 7,518.78 is: 11,277.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.70 : 28,810.89 = 7,518.78 : x
  2. Step 2: Convert to fraction form
    19,208.70/28,810.89 = 7,518.78/x
  3. Step 3: Cross multiply
    19,208.70x = 28,810.89 × 7,518.78
  4. Step 4: Simplify right side
    19,208.70x = 216,622,743.51
  5. Step 5: Solve for x
    x = 216,622,743.51/19,208.70
  6. Step 6: Final answer
    x = 11,277.32

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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.