Home / 39,218.46-54,122.16-21,313.38

Finding the Fourth Proportional to 39,218.46, 54,122.16 and 21,313.38

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Solution

The fourth proportional to 39,218.46, 54,122.16 and 21,313.38 is: 29,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.46 : 54,122.16 = 21,313.38 : x
  2. Step 2: Convert to fraction form
    39,218.46/54,122.16 = 21,313.38/x
  3. Step 3: Cross multiply
    39,218.46x = 54,122.16 × 21,313.38
  4. Step 4: Simplify right side
    39,218.46x = 1,153,526,162.50
  5. Step 5: Solve for x
    x = 1,153,526,162.50/39,218.46
  6. Step 6: Final answer
    x = 29,412.84

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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.