Home / 39,699.12-54,783.78-21,793.97

Finding the Fourth Proportional to 39,699.12, 54,783.78 and 21,793.97

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Solution

The fourth proportional to 39,699.12, 54,783.78 and 21,793.97 is: 30,075.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,699.12 : 54,783.78 = 21,793.97 : x
  2. Step 2: Convert to fraction form
    39,699.12/54,783.78 = 21,793.97/x
  3. Step 3: Cross multiply
    39,699.12x = 54,783.78 × 21,793.97
  4. Step 4: Simplify right side
    39,699.12x = 1,193,956,113.04
  5. Step 5: Solve for x
    x = 1,193,956,113.04/39,699.12
  6. Step 6: Final answer
    x = 30,075.13

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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.