Home / 19,189.08-28,783.62-18,106.20

Finding the Fourth Proportional to 19,189.08, 28,783.62 and 18,106.20

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Solution

The fourth proportional to 19,189.08, 28,783.62 and 18,106.20 is: 27,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189.08 : 28,783.62 = 18,106.20 : x
  2. Step 2: Convert to fraction form
    19,189.08/28,783.62 = 18,106.20/x
  3. Step 3: Cross multiply
    19,189.08x = 28,783.62 × 18,106.20
  4. Step 4: Simplify right side
    19,189.08x = 521,161,980.44
  5. Step 5: Solve for x
    x = 521,161,980.44/19,189.08
  6. Step 6: Final answer
    x = 27,159.30

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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.