Home / 19,620.91-29,428.48-6,471.60

Finding the Fourth Proportional to 19,620.91, 29,428.48 and 6,471.60

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Solution

The fourth proportional to 19,620.91, 29,428.48 and 6,471.60 is: 9,706.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.91 : 29,428.48 = 6,471.60 : x
  2. Step 2: Convert to fraction form
    19,620.91/29,428.48 = 6,471.60/x
  3. Step 3: Cross multiply
    19,620.91x = 29,428.48 × 6,471.60
  4. Step 4: Simplify right side
    19,620.91x = 190,449,351.17
  5. Step 5: Solve for x
    x = 190,449,351.17/19,620.91
  6. Step 6: Final answer
    x = 9,706.45

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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.