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Finding the Fourth Proportional to 35,318.99, 48,718.59 and 20,969.09

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Solution

The fourth proportional to 35,318.99, 48,718.59 and 20,969.09 is: 28,924.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,318.99 : 48,718.59 = 20,969.09 : x
  2. Step 2: Convert to fraction form
    35,318.99/48,718.59 = 20,969.09/x
  3. Step 3: Cross multiply
    35,318.99x = 48,718.59 × 20,969.09
  4. Step 4: Simplify right side
    35,318.99x = 1,021,584,149.94
  5. Step 5: Solve for x
    x = 1,021,584,149.94/35,318.99
  6. Step 6: Final answer
    x = 28,924.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.