Home / 18,971.00-28,458.77-5,821.65

Finding the Fourth Proportional to 18,971.00, 28,458.77 and 5,821.65

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Solution

The fourth proportional to 18,971.00, 28,458.77 and 5,821.65 is: 8,733.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.00 : 28,458.77 = 5,821.65 : x
  2. Step 2: Convert to fraction form
    18,971.00/28,458.77 = 5,821.65/x
  3. Step 3: Cross multiply
    18,971.00x = 28,458.77 × 5,821.65
  4. Step 4: Simplify right side
    18,971.00x = 165,676,969.26
  5. Step 5: Solve for x
    x = 165,676,969.26/18,971.00
  6. Step 6: Final answer
    x = 8,733.17

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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.