Home / 28,531.14-39,378.42-19,116.12

Finding the Fourth Proportional to 28,531.14, 39,378.42 and 19,116.12

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Solution

The fourth proportional to 28,531.14, 39,378.42 and 19,116.12 is: 26,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.14 : 39,378.42 = 19,116.12 : x
  2. Step 2: Convert to fraction form
    28,531.14/39,378.42 = 19,116.12/x
  3. Step 3: Cross multiply
    28,531.14x = 39,378.42 × 19,116.12
  4. Step 4: Simplify right side
    28,531.14x = 752,762,602.13
  5. Step 5: Solve for x
    x = 752,762,602.13/28,531.14
  6. Step 6: Final answer
    x = 26,383.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.