Home / 38,215.78-57,355.26-19,509.64

Finding the Fourth Proportional to 38,215.78, 57,355.26 and 19,509.64

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Solution

The fourth proportional to 38,215.78, 57,355.26 and 19,509.64 is: 29,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,215.78 : 57,355.26 = 19,509.64 : x
  2. Step 2: Convert to fraction form
    38,215.78/57,355.26 = 19,509.64/x
  3. Step 3: Cross multiply
    38,215.78x = 57,355.26 × 19,509.64
  4. Step 4: Simplify right side
    38,215.78x = 1,118,980,474.71
  5. Step 5: Solve for x
    x = 1,118,980,474.71/38,215.78
  6. Step 6: Final answer
    x = 29,280.59

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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.