Home / 39,699.80-54,785.30-21,794.34

Finding the Fourth Proportional to 39,699.80, 54,785.30 and 21,794.34

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Solution

The fourth proportional to 39,699.80, 54,785.30 and 21,794.34 is: 30,075.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,699.80 : 54,785.30 = 21,794.34 : x
  2. Step 2: Convert to fraction form
    39,699.80/54,785.30 = 21,794.34/x
  3. Step 3: Cross multiply
    39,699.80x = 54,785.30 × 21,794.34
  4. Step 4: Simplify right side
    39,699.80x = 1,194,009,346.23
  5. Step 5: Solve for x
    x = 1,194,009,346.23/39,699.80
  6. Step 6: Final answer
    x = 30,075.96

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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.