Home / 21,018.32-31,536.81-11,020.67

Finding the Fourth Proportional to 21,018.32, 31,536.81 and 11,020.67

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Solution

The fourth proportional to 21,018.32, 31,536.81 and 11,020.67 is: 16,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.32 : 31,536.81 = 11,020.67 : x
  2. Step 2: Convert to fraction form
    21,018.32/31,536.81 = 11,020.67/x
  3. Step 3: Cross multiply
    21,018.32x = 31,536.81 × 11,020.67
  4. Step 4: Simplify right side
    21,018.32x = 347,556,618.18
  5. Step 5: Solve for x
    x = 347,556,618.18/21,018.32
  6. Step 6: Final answer
    x = 16,535.89

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1.5x scale

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.