Home / 20,459.75-30,661.62-15,458.01

Finding the Fourth Proportional to 20,459.75, 30,661.62 and 15,458.01

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Solution

The fourth proportional to 20,459.75, 30,661.62 and 15,458.01 is: 23,165.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.75 : 30,661.62 = 15,458.01 : x
  2. Step 2: Convert to fraction form
    20,459.75/30,661.62 = 15,458.01/x
  3. Step 3: Cross multiply
    20,459.75x = 30,661.62 × 15,458.01
  4. Step 4: Simplify right side
    20,459.75x = 473,967,628.58
  5. Step 5: Solve for x
    x = 473,967,628.58/20,459.75
  6. Step 6: Final answer
    x = 23,165.86

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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.