Home / 28,919.04-39,896.46-19,490.64

Finding the Fourth Proportional to 28,919.04, 39,896.46 and 19,490.64

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Solution

The fourth proportional to 28,919.04, 39,896.46 and 19,490.64 is: 26,889.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.04 : 39,896.46 = 19,490.64 : x
  2. Step 2: Convert to fraction form
    28,919.04/39,896.46 = 19,490.64/x
  3. Step 3: Cross multiply
    28,919.04x = 39,896.46 × 19,490.64
  4. Step 4: Simplify right side
    28,919.04x = 777,607,539.13
  5. Step 5: Solve for x
    x = 777,607,539.13/28,919.04
  6. Step 6: Final answer
    x = 26,889.12

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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.