Home / 39,765.74-54,876.29-21,616.34

Finding the Fourth Proportional to 39,765.74, 54,876.29 and 21,616.34

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Solution

The fourth proportional to 39,765.74, 54,876.29 and 21,616.34 is: 29,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.74 : 54,876.29 = 21,616.34 : x
  2. Step 2: Convert to fraction form
    39,765.74/54,876.29 = 21,616.34/x
  3. Step 3: Cross multiply
    39,765.74x = 54,876.29 × 21,616.34
  4. Step 4: Simplify right side
    39,765.74x = 1,186,224,160.12
  5. Step 5: Solve for x
    x = 1,186,224,160.12/39,765.74
  6. Step 6: Final answer
    x = 29,830.31

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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.