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Finding the Fourth Proportional to 14,025.30, 21,047.91 and 7,790.30

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Solution

The fourth proportional to 14,025.30, 21,047.91 and 7,790.30 is: 11,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,025.30 : 21,047.91 = 7,790.30 : x
  2. Step 2: Convert to fraction form
    14,025.30/21,047.91 = 7,790.30/x
  3. Step 3: Cross multiply
    14,025.30x = 21,047.91 × 7,790.30
  4. Step 4: Simplify right side
    14,025.30x = 163,969,428.03
  5. Step 5: Solve for x
    x = 163,969,428.03/14,025.30
  6. Step 6: Final answer
    x = 11,690.97

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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.