Home / 14,114.78-21,174.60-7,539.20

Finding the Fourth Proportional to 14,114.78, 21,174.60 and 7,539.20

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Solution

The fourth proportional to 14,114.78, 21,174.60 and 7,539.20 is: 11,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,114.78 : 21,174.60 = 7,539.20 : x
  2. Step 2: Convert to fraction form
    14,114.78/21,174.60 = 7,539.20/x
  3. Step 3: Cross multiply
    14,114.78x = 21,174.60 × 7,539.20
  4. Step 4: Simplify right side
    14,114.78x = 159,639,544.32
  5. Step 5: Solve for x
    x = 159,639,544.32/14,114.78
  6. Step 6: Final answer
    x = 11,310.10

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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.