Home / 19,680.90-29,520.93-4,889.64

Finding the Fourth Proportional to 19,680.90, 29,520.93 and 4,889.64

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Solution

The fourth proportional to 19,680.90, 29,520.93 and 4,889.64 is: 7,334.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.90 : 29,520.93 = 4,889.64 : x
  2. Step 2: Convert to fraction form
    19,680.90/29,520.93 = 4,889.64/x
  3. Step 3: Cross multiply
    19,680.90x = 29,520.93 × 4,889.64
  4. Step 4: Simplify right side
    19,680.90x = 144,346,849.20
  5. Step 5: Solve for x
    x = 144,346,849.20/19,680.90
  6. Step 6: Final answer
    x = 7,334.36

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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.