Home / 13,995.20-19,316.64-9,809.60

Finding the Fourth Proportional to 13,995.20, 19,316.64 and 9,809.60

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Solution

The fourth proportional to 13,995.20, 19,316.64 and 9,809.60 is: 13,539.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.20 : 19,316.64 = 9,809.60 : x
  2. Step 2: Convert to fraction form
    13,995.20/19,316.64 = 9,809.60/x
  3. Step 3: Cross multiply
    13,995.20x = 19,316.64 × 9,809.60
  4. Step 4: Simplify right side
    13,995.20x = 189,488,511.74
  5. Step 5: Solve for x
    x = 189,488,511.74/13,995.20
  6. Step 6: Final answer
    x = 13,539.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.