Home / 28,290.87-39,026.75-19,216.69

Finding the Fourth Proportional to 28,290.87, 39,026.75 and 19,216.69

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Solution

The fourth proportional to 28,290.87, 39,026.75 and 19,216.69 is: 26,509.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.87 : 39,026.75 = 19,216.69 : x
  2. Step 2: Convert to fraction form
    28,290.87/39,026.75 = 19,216.69/x
  3. Step 3: Cross multiply
    28,290.87x = 39,026.75 × 19,216.69
  4. Step 4: Simplify right side
    28,290.87x = 749,965,144.47
  5. Step 5: Solve for x
    x = 749,965,144.47/28,290.87
  6. Step 6: Final answer
    x = 26,509.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.