Home / 39,038.21-53,872.72-21,133.21

Finding the Fourth Proportional to 39,038.21, 53,872.72 and 21,133.21

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Solution

The fourth proportional to 39,038.21, 53,872.72 and 21,133.21 is: 29,163.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.21 : 53,872.72 = 21,133.21 : x
  2. Step 2: Convert to fraction form
    39,038.21/53,872.72 = 21,133.21/x
  3. Step 3: Cross multiply
    39,038.21x = 53,872.72 × 21,133.21
  4. Step 4: Simplify right side
    39,038.21x = 1,138,503,415.60
  5. Step 5: Solve for x
    x = 1,138,503,415.60/39,038.21
  6. Step 6: Final answer
    x = 29,163.82

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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.