Home / 39,415.34-54,394.34-21,511.50

Finding the Fourth Proportional to 39,415.34, 54,394.34 and 21,511.50

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Solution

The fourth proportional to 39,415.34, 54,394.34 and 21,511.50 is: 29,686.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.34 : 54,394.34 = 21,511.50 : x
  2. Step 2: Convert to fraction form
    39,415.34/54,394.34 = 21,511.50/x
  3. Step 3: Cross multiply
    39,415.34x = 54,394.34 × 21,511.50
  4. Step 4: Simplify right side
    39,415.34x = 1,170,103,844.91
  5. Step 5: Solve for x
    x = 1,170,103,844.91/39,415.34
  6. Step 6: Final answer
    x = 29,686.51

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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.