Home / 30,482.04-42,046.38-20,917.56

Finding the Fourth Proportional to 30,482.04, 42,046.38 and 20,917.56

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Solution

The fourth proportional to 30,482.04, 42,046.38 and 20,917.56 is: 28,853.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,482.04 : 42,046.38 = 20,917.56 : x
  2. Step 2: Convert to fraction form
    30,482.04/42,046.38 = 20,917.56/x
  3. Step 3: Cross multiply
    30,482.04x = 42,046.38 × 20,917.56
  4. Step 4: Simplify right side
    30,482.04x = 879,507,676.43
  5. Step 5: Solve for x
    x = 879,507,676.43/30,482.04
  6. Step 6: Final answer
    x = 28,853.31

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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.