Home / 15,286.60-21,096.48-9,995.68

Finding the Fourth Proportional to 15,286.60, 21,096.48 and 9,995.68

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Solution

The fourth proportional to 15,286.60, 21,096.48 and 9,995.68 is: 13,794.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.60 : 21,096.48 = 9,995.68 : x
  2. Step 2: Convert to fraction form
    15,286.60/21,096.48 = 9,995.68/x
  3. Step 3: Cross multiply
    15,286.60x = 21,096.48 × 9,995.68
  4. Step 4: Simplify right side
    15,286.60x = 210,873,663.21
  5. Step 5: Solve for x
    x = 210,873,663.21/15,286.60
  6. Step 6: Final answer
    x = 13,794.67

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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.