Home / 39,765.33-54,875.61-21,615.66

Finding the Fourth Proportional to 39,765.33, 54,875.61 and 21,615.66

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Solution

The fourth proportional to 39,765.33, 54,875.61 and 21,615.66 is: 29,829.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.33 : 54,875.61 = 21,615.66 : x
  2. Step 2: Convert to fraction form
    39,765.33/54,875.61 = 21,615.66/x
  3. Step 3: Cross multiply
    39,765.33x = 54,875.61 × 21,615.66
  4. Step 4: Simplify right side
    39,765.33x = 1,186,172,528.05
  5. Step 5: Solve for x
    x = 1,186,172,528.05/39,765.33
  6. Step 6: Final answer
    x = 29,829.31

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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.