Home / 28,355.36-42,536.51-9,638.48

Finding the Fourth Proportional to 28,355.36, 42,536.51 and 9,638.48

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Solution

The fourth proportional to 28,355.36, 42,536.51 and 9,638.48 is: 14,458.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.36 : 42,536.51 = 9,638.48 : x
  2. Step 2: Convert to fraction form
    28,355.36/42,536.51 = 9,638.48/x
  3. Step 3: Cross multiply
    28,355.36x = 42,536.51 × 9,638.48
  4. Step 4: Simplify right side
    28,355.36x = 409,987,040.03
  5. Step 5: Solve for x
    x = 409,987,040.03/28,355.36
  6. Step 6: Final answer
    x = 14,458.89

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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.