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Finding the Fourth Proportional to 35,643.07, 49,187.43 and 20,739.07

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Solution

The fourth proportional to 35,643.07, 49,187.43 and 20,739.07 is: 28,619.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,643.07 : 49,187.43 = 20,739.07 : x
  2. Step 2: Convert to fraction form
    35,643.07/49,187.43 = 20,739.07/x
  3. Step 3: Cross multiply
    35,643.07x = 49,187.43 × 20,739.07
  4. Step 4: Simplify right side
    35,643.07x = 1,020,101,307.95
  5. Step 5: Solve for x
    x = 1,020,101,307.95/35,643.07
  6. Step 6: Final answer
    x = 28,619.91

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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.