Home / 39,431.29-54,416.40-21,527.46

Finding the Fourth Proportional to 39,431.29, 54,416.40 and 21,527.46

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Solution

The fourth proportional to 39,431.29, 54,416.40 and 21,527.46 is: 29,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.29 : 54,416.40 = 21,527.46 : x
  2. Step 2: Convert to fraction form
    39,431.29/54,416.40 = 21,527.46/x
  3. Step 3: Cross multiply
    39,431.29x = 54,416.40 × 21,527.46
  4. Step 4: Simplify right side
    39,431.29x = 1,171,446,874.34
  5. Step 5: Solve for x
    x = 1,171,446,874.34/39,431.29
  6. Step 6: Final answer
    x = 29,708.56

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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.