Home / 28,981.56-43,389.60-19,090.68

Finding the Fourth Proportional to 28,981.56, 43,389.60 and 19,090.68

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Solution

The fourth proportional to 28,981.56, 43,389.60 and 19,090.68 is: 28,581.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.56 : 43,389.60 = 19,090.68 : x
  2. Step 2: Convert to fraction form
    28,981.56/43,389.60 = 19,090.68/x
  3. Step 3: Cross multiply
    28,981.56x = 43,389.60 × 19,090.68
  4. Step 4: Simplify right side
    28,981.56x = 828,336,968.93
  5. Step 5: Solve for x
    x = 828,336,968.93/28,981.56
  6. Step 6: Final answer
    x = 28,581.52

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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.