Home / 21,058.35-31,579.47-7,015.68

Finding the Fourth Proportional to 21,058.35, 31,579.47 and 7,015.68

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Solution

The fourth proportional to 21,058.35, 31,579.47 and 7,015.68 is: 10,520.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.35 : 31,579.47 = 7,015.68 : x
  2. Step 2: Convert to fraction form
    21,058.35/31,579.47 = 7,015.68/x
  3. Step 3: Cross multiply
    21,058.35x = 31,579.47 × 7,015.68
  4. Step 4: Simplify right side
    21,058.35x = 221,551,456.09
  5. Step 5: Solve for x
    x = 221,551,456.09/21,058.35
  6. Step 6: Final answer
    x = 10,520.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.