Home / 14,109.90-21,162.89-9,880.34

Finding the Fourth Proportional to 14,109.90, 21,162.89 and 9,880.34

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Solution

The fourth proportional to 14,109.90, 21,162.89 and 9,880.34 is: 14,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.90 : 21,162.89 = 9,880.34 : x
  2. Step 2: Convert to fraction form
    14,109.90/21,162.89 = 9,880.34/x
  3. Step 3: Cross multiply
    14,109.90x = 21,162.89 × 9,880.34
  4. Step 4: Simplify right side
    14,109.90x = 209,096,393.37
  5. Step 5: Solve for x
    x = 209,096,393.37/14,109.90
  6. Step 6: Final answer
    x = 14,819.13

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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.