Home / 39,040.58-53,875.35-21,135.42

Finding the Fourth Proportional to 39,040.58, 53,875.35 and 21,135.42

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Solution

The fourth proportional to 39,040.58, 53,875.35 and 21,135.42 is: 29,166.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.58 : 53,875.35 = 21,135.42 : x
  2. Step 2: Convert to fraction form
    39,040.58/53,875.35 = 21,135.42/x
  3. Step 3: Cross multiply
    39,040.58x = 53,875.35 × 21,135.42
  4. Step 4: Simplify right side
    39,040.58x = 1,138,678,149.90
  5. Step 5: Solve for x
    x = 1,138,678,149.90/39,040.58
  6. Step 6: Final answer
    x = 29,166.53

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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.