Home / 19,639.56-29,420.96-15,699.11

Finding the Fourth Proportional to 19,639.56, 29,420.96 and 15,699.11

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Solution

The fourth proportional to 19,639.56, 29,420.96 and 15,699.11 is: 23,517.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.56 : 29,420.96 = 15,699.11 : x
  2. Step 2: Convert to fraction form
    19,639.56/29,420.96 = 15,699.11/x
  3. Step 3: Cross multiply
    19,639.56x = 29,420.96 × 15,699.11
  4. Step 4: Simplify right side
    19,639.56x = 461,882,887.35
  5. Step 5: Solve for x
    x = 461,882,887.35/19,639.56
  6. Step 6: Final answer
    x = 23,517.99

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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.