Home / 19,113.64-28,668.66-6,631.72

Finding the Fourth Proportional to 19,113.64, 28,668.66 and 6,631.72

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Solution

The fourth proportional to 19,113.64, 28,668.66 and 6,631.72 is: 9,946.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.64 : 28,668.66 = 6,631.72 : x
  2. Step 2: Convert to fraction form
    19,113.64/28,668.66 = 6,631.72/x
  3. Step 3: Cross multiply
    19,113.64x = 28,668.66 × 6,631.72
  4. Step 4: Simplify right side
    19,113.64x = 190,122,525.90
  5. Step 5: Solve for x
    x = 190,122,525.90/19,113.64
  6. Step 6: Final answer
    x = 9,946.96

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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.