Home / 39,255.51-54,171.03-21,350.50

Finding the Fourth Proportional to 39,255.51, 54,171.03 and 21,350.50

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Solution

The fourth proportional to 39,255.51, 54,171.03 and 21,350.50 is: 29,462.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,255.51 : 54,171.03 = 21,350.50 : x
  2. Step 2: Convert to fraction form
    39,255.51/54,171.03 = 21,350.50/x
  3. Step 3: Cross multiply
    39,255.51x = 54,171.03 × 21,350.50
  4. Step 4: Simplify right side
    39,255.51x = 1,156,578,576.02
  5. Step 5: Solve for x
    x = 1,156,578,576.02/39,255.51
  6. Step 6: Final answer
    x = 29,462.84

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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.