Home / 35,968.80-49,628.40-21,821.28

Finding the Fourth Proportional to 35,968.80, 49,628.40 and 21,821.28

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Solution

The fourth proportional to 35,968.80, 49,628.40 and 21,821.28 is: 30,108.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,968.80 : 49,628.40 = 21,821.28 : x
  2. Step 2: Convert to fraction form
    35,968.80/49,628.40 = 21,821.28/x
  3. Step 3: Cross multiply
    35,968.80x = 49,628.40 × 21,821.28
  4. Step 4: Simplify right side
    35,968.80x = 1,082,955,212.35
  5. Step 5: Solve for x
    x = 1,082,955,212.35/35,968.80
  6. Step 6: Final answer
    x = 30,108.18

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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.