Home / 28,858.53-43,301.50-19,987.51

Finding the Fourth Proportional to 28,858.53, 43,301.50 and 19,987.51

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Solution

The fourth proportional to 28,858.53, 43,301.50 and 19,987.51 is: 29,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.53 : 43,301.50 = 19,987.51 : x
  2. Step 2: Convert to fraction form
    28,858.53/43,301.50 = 19,987.51/x
  3. Step 3: Cross multiply
    28,858.53x = 43,301.50 × 19,987.51
  4. Step 4: Simplify right side
    28,858.53x = 865,489,199.66
  5. Step 5: Solve for x
    x = 865,489,199.66/28,858.53
  6. Step 6: Final answer
    x = 29,990.76

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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.