Home / 19,385.58-29,081.61-7,698.90

Finding the Fourth Proportional to 19,385.58, 29,081.61 and 7,698.90

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Solution

The fourth proportional to 19,385.58, 29,081.61 and 7,698.90 is: 11,549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.58 : 29,081.61 = 7,698.90 : x
  2. Step 2: Convert to fraction form
    19,385.58/29,081.61 = 7,698.90/x
  3. Step 3: Cross multiply
    19,385.58x = 29,081.61 × 7,698.90
  4. Step 4: Simplify right side
    19,385.58x = 223,896,407.23
  5. Step 5: Solve for x
    x = 223,896,407.23/19,385.58
  6. Step 6: Final answer
    x = 11,549.64

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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.