Home / 39,343.50-54,293.94-21,438.66

Finding the Fourth Proportional to 39,343.50, 54,293.94 and 21,438.66

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Solution

The fourth proportional to 39,343.50, 54,293.94 and 21,438.66 is: 29,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,343.50 : 54,293.94 = 21,438.66 : x
  2. Step 2: Convert to fraction form
    39,343.50/54,293.94 = 21,438.66/x
  3. Step 3: Cross multiply
    39,343.50x = 54,293.94 × 21,438.66
  4. Step 4: Simplify right side
    39,343.50x = 1,163,989,319.72
  5. Step 5: Solve for x
    x = 1,163,989,319.72/39,343.50
  6. Step 6: Final answer
    x = 29,585.30

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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.