Home / 13,081.38-19,693.91-11,530.23

Finding the Fourth Proportional to 13,081.38, 19,693.91 and 11,530.23

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Solution

The fourth proportional to 13,081.38, 19,693.91 and 11,530.23 is: 17,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.38 : 19,693.91 = 11,530.23 : x
  2. Step 2: Convert to fraction form
    13,081.38/19,693.91 = 11,530.23/x
  3. Step 3: Cross multiply
    13,081.38x = 19,693.91 × 11,530.23
  4. Step 4: Simplify right side
    13,081.38x = 227,075,254.25
  5. Step 5: Solve for x
    x = 227,075,254.25/13,081.38
  6. Step 6: Final answer
    x = 17,358.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.