Home / 18,985.14-28,495.06-9,631.60

Finding the Fourth Proportional to 18,985.14, 28,495.06 and 9,631.60

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Solution

The fourth proportional to 18,985.14, 28,495.06 and 9,631.60 is: 14,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.14 : 28,495.06 = 9,631.60 : x
  2. Step 2: Convert to fraction form
    18,985.14/28,495.06 = 9,631.60/x
  3. Step 3: Cross multiply
    18,985.14x = 28,495.06 × 9,631.60
  4. Step 4: Simplify right side
    18,985.14x = 274,452,924.58
  5. Step 5: Solve for x
    x = 274,452,924.58/18,985.14
  6. Step 6: Final answer
    x = 14,456.20

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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.