Home / 28,506.12-39,297.06-19,981.68

Finding the Fourth Proportional to 28,506.12, 39,297.06 and 19,981.68

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Solution

The fourth proportional to 28,506.12, 39,297.06 and 19,981.68 is: 27,545.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.12 : 39,297.06 = 19,981.68 : x
  2. Step 2: Convert to fraction form
    28,506.12/39,297.06 = 19,981.68/x
  3. Step 3: Cross multiply
    28,506.12x = 39,297.06 × 19,981.68
  4. Step 4: Simplify right side
    28,506.12x = 785,221,277.86
  5. Step 5: Solve for x
    x = 785,221,277.86/28,506.12
  6. Step 6: Final answer
    x = 27,545.71

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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.