Home / 13,765.32-18,968.40-9,976.32

Finding the Fourth Proportional to 13,765.32, 18,968.40 and 9,976.32

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Solution

The fourth proportional to 13,765.32, 18,968.40 and 9,976.32 is: 13,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.32 : 18,968.40 = 9,976.32 : x
  2. Step 2: Convert to fraction form
    13,765.32/18,968.40 = 9,976.32/x
  3. Step 3: Cross multiply
    13,765.32x = 18,968.40 × 9,976.32
  4. Step 4: Simplify right side
    13,765.32x = 189,234,828.29
  5. Step 5: Solve for x
    x = 189,234,828.29/13,765.32
  6. Step 6: Final answer
    x = 13,747.22

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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.