Home / 39,342.96-54,293.58-21,438.45

Finding the Fourth Proportional to 39,342.96, 54,293.58 and 21,438.45

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Solution

The fourth proportional to 39,342.96, 54,293.58 and 21,438.45 is: 29,585.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.96 : 54,293.58 = 21,438.45 : x
  2. Step 2: Convert to fraction form
    39,342.96/54,293.58 = 21,438.45/x
  3. Step 3: Cross multiply
    39,342.96x = 54,293.58 × 21,438.45
  4. Step 4: Simplify right side
    39,342.96x = 1,163,970,200.15
  5. Step 5: Solve for x
    x = 1,163,970,200.15/39,342.96
  6. Step 6: Final answer
    x = 29,585.22

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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.