Home / 39,028.16-53,858.80-21,123.16

Finding the Fourth Proportional to 39,028.16, 53,858.80 and 21,123.16

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Solution

The fourth proportional to 39,028.16, 53,858.80 and 21,123.16 is: 29,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,028.16 : 53,858.80 = 21,123.16 : x
  2. Step 2: Convert to fraction form
    39,028.16/53,858.80 = 21,123.16/x
  3. Step 3: Cross multiply
    39,028.16x = 53,858.80 × 21,123.16
  4. Step 4: Simplify right side
    39,028.16x = 1,137,667,941.56
  5. Step 5: Solve for x
    x = 1,137,667,941.56/39,028.16
  6. Step 6: Final answer
    x = 29,149.92

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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.