Home / 19,920.45-27,490.21-10,967.88

Finding the Fourth Proportional to 19,920.45, 27,490.21 and 10,967.88

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Solution

The fourth proportional to 19,920.45, 27,490.21 and 10,967.88 is: 15,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.45 : 27,490.21 = 10,967.88 : x
  2. Step 2: Convert to fraction form
    19,920.45/27,490.21 = 10,967.88/x
  3. Step 3: Cross multiply
    19,920.45x = 27,490.21 × 10,967.88
  4. Step 4: Simplify right side
    19,920.45x = 301,509,324.45
  5. Step 5: Solve for x
    x = 301,509,324.45/19,920.45
  6. Step 6: Final answer
    x = 15,135.67

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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.