Home / 19,030.77-28,578.83-11,678.40

Finding the Fourth Proportional to 19,030.77, 28,578.83 and 11,678.40

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Solution

The fourth proportional to 19,030.77, 28,578.83 and 11,678.40 is: 17,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,030.77 : 28,578.83 = 11,678.40 : x
  2. Step 2: Convert to fraction form
    19,030.77/28,578.83 = 11,678.40/x
  3. Step 3: Cross multiply
    19,030.77x = 28,578.83 × 11,678.40
  4. Step 4: Simplify right side
    19,030.77x = 333,754,949.88
  5. Step 5: Solve for x
    x = 333,754,949.88/19,030.77
  6. Step 6: Final answer
    x = 17,537.65

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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.