Home / 39,670.40-54,745.72-21,765.08

Finding the Fourth Proportional to 39,670.40, 54,745.72 and 21,765.08

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Solution

The fourth proportional to 39,670.40, 54,745.72 and 21,765.08 is: 30,036.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.40 : 54,745.72 = 21,765.08 : x
  2. Step 2: Convert to fraction form
    39,670.40/54,745.72 = 21,765.08/x
  3. Step 3: Cross multiply
    39,670.40x = 54,745.72 × 21,765.08
  4. Step 4: Simplify right side
    39,670.40x = 1,191,544,975.46
  5. Step 5: Solve for x
    x = 1,191,544,975.46/39,670.40
  6. Step 6: Final answer
    x = 30,036.12

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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.