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Finding the Fourth Proportional to 35,643.50, 49,200.99 and 20,739.50

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Solution

The fourth proportional to 35,643.50, 49,200.99 and 20,739.50 is: 28,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,643.50 : 49,200.99 = 20,739.50 : x
  2. Step 2: Convert to fraction form
    35,643.50/49,200.99 = 20,739.50/x
  3. Step 3: Cross multiply
    35,643.50x = 49,200.99 × 20,739.50
  4. Step 4: Simplify right side
    35,643.50x = 1,020,403,932.11
  5. Step 5: Solve for x
    x = 1,020,403,932.11/35,643.50
  6. Step 6: Final answer
    x = 28,628.05

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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.