Home / 39,023.28-53,852.22-21,118.50

Finding the Fourth Proportional to 39,023.28, 53,852.22 and 21,118.50

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Solution

The fourth proportional to 39,023.28, 53,852.22 and 21,118.50 is: 29,143.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,023.28 : 53,852.22 = 21,118.50 : x
  2. Step 2: Convert to fraction form
    39,023.28/53,852.22 = 21,118.50/x
  3. Step 3: Cross multiply
    39,023.28x = 53,852.22 × 21,118.50
  4. Step 4: Simplify right side
    39,023.28x = 1,137,278,108.07
  5. Step 5: Solve for x
    x = 1,137,278,108.07/39,023.28
  6. Step 6: Final answer
    x = 29,143.58

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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.