Home / 28,077.45-38,715.41-19,130.19

Finding the Fourth Proportional to 28,077.45, 38,715.41 and 19,130.19

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Solution

The fourth proportional to 28,077.45, 38,715.41 and 19,130.19 is: 26,378.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.45 : 38,715.41 = 19,130.19 : x
  2. Step 2: Convert to fraction form
    28,077.45/38,715.41 = 19,130.19/x
  3. Step 3: Cross multiply
    28,077.45x = 38,715.41 × 19,130.19
  4. Step 4: Simplify right side
    28,077.45x = 740,633,053.58
  5. Step 5: Solve for x
    x = 740,633,053.58/28,077.45
  6. Step 6: Final answer
    x = 26,378.22

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Half scale
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Double scale
Find fourth proportional to 28,078.45, 38,716.78 and 19,131.19
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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.