Home / 19,790.64-29,690.39-6,642.67

Finding the Fourth Proportional to 19,790.64, 29,690.39 and 6,642.67

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Solution

The fourth proportional to 19,790.64, 29,690.39 and 6,642.67 is: 9,965.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.64 : 29,690.39 = 6,642.67 : x
  2. Step 2: Convert to fraction form
    19,790.64/29,690.39 = 6,642.67/x
  3. Step 3: Cross multiply
    19,790.64x = 29,690.39 × 6,642.67
  4. Step 4: Simplify right side
    19,790.64x = 197,223,462.94
  5. Step 5: Solve for x
    x = 197,223,462.94/19,790.64
  6. Step 6: Final answer
    x = 9,965.49

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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.