Home / 18,886.08-28,319.76-11,397.36

Finding the Fourth Proportional to 18,886.08, 28,319.76 and 11,397.36

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Solution

The fourth proportional to 18,886.08, 28,319.76 and 11,397.36 is: 17,090.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.08 : 28,319.76 = 11,397.36 : x
  2. Step 2: Convert to fraction form
    18,886.08/28,319.76 = 11,397.36/x
  3. Step 3: Cross multiply
    18,886.08x = 28,319.76 × 11,397.36
  4. Step 4: Simplify right side
    18,886.08x = 322,770,499.83
  5. Step 5: Solve for x
    x = 322,770,499.83/18,886.08
  6. Step 6: Final answer
    x = 17,090.39

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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.