Home / 39,417.42-54,396.23-21,512.81

Finding the Fourth Proportional to 39,417.42, 54,396.23 and 21,512.81

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Solution

The fourth proportional to 39,417.42, 54,396.23 and 21,512.81 is: 29,687.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.42 : 54,396.23 = 21,512.81 : x
  2. Step 2: Convert to fraction form
    39,417.42/54,396.23 = 21,512.81/x
  3. Step 3: Cross multiply
    39,417.42x = 54,396.23 × 21,512.81
  4. Step 4: Simplify right side
    39,417.42x = 1,170,215,381.16
  5. Step 5: Solve for x
    x = 1,170,215,381.16/39,417.42
  6. Step 6: Final answer
    x = 29,687.77

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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.