Home / 19,010.39-28,534.05-13,779.05

Finding the Fourth Proportional to 19,010.39, 28,534.05 and 13,779.05

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Solution

The fourth proportional to 19,010.39, 28,534.05 and 13,779.05 is: 20,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.39 : 28,534.05 = 13,779.05 : x
  2. Step 2: Convert to fraction form
    19,010.39/28,534.05 = 13,779.05/x
  3. Step 3: Cross multiply
    19,010.39x = 28,534.05 × 13,779.05
  4. Step 4: Simplify right side
    19,010.39x = 393,172,101.65
  5. Step 5: Solve for x
    x = 393,172,101.65/19,010.39
  6. Step 6: Final answer
    x = 20,681.96

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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.