Home / 39,342.68-54,294.54-21,438.68

Finding the Fourth Proportional to 39,342.68, 54,294.54 and 21,438.68

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Solution

The fourth proportional to 39,342.68, 54,294.54 and 21,438.68 is: 29,586.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.68 : 54,294.54 = 21,438.68 : x
  2. Step 2: Convert to fraction form
    39,342.68/54,294.54 = 21,438.68/x
  3. Step 3: Cross multiply
    39,342.68x = 54,294.54 × 21,438.68
  4. Step 4: Simplify right side
    39,342.68x = 1,164,003,268.81
  5. Step 5: Solve for x
    x = 1,164,003,268.81/39,342.68
  6. Step 6: Final answer
    x = 29,586.27

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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.