Home / 19,516.50-29,278.44-7,830.63

Finding the Fourth Proportional to 19,516.50, 29,278.44 and 7,830.63

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Solution

The fourth proportional to 19,516.50, 29,278.44 and 7,830.63 is: 11,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,516.50 : 29,278.44 = 7,830.63 : x
  2. Step 2: Convert to fraction form
    19,516.50/29,278.44 = 7,830.63/x
  3. Step 3: Cross multiply
    19,516.50x = 29,278.44 × 7,830.63
  4. Step 4: Simplify right side
    19,516.50x = 229,268,630.62
  5. Step 5: Solve for x
    x = 229,268,630.62/19,516.50
  6. Step 6: Final answer
    x = 11,747.43

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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.