Home / 21,058.75-31,587.99-5,263.70

Finding the Fourth Proportional to 21,058.75, 31,587.99 and 5,263.70

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Solution

The fourth proportional to 21,058.75, 31,587.99 and 5,263.70 is: 7,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.75 : 31,587.99 = 5,263.70 : x
  2. Step 2: Convert to fraction form
    21,058.75/31,587.99 = 5,263.70/x
  3. Step 3: Cross multiply
    21,058.75x = 31,587.99 × 5,263.70
  4. Step 4: Simplify right side
    21,058.75x = 166,269,683.22
  5. Step 5: Solve for x
    x = 166,269,683.22/21,058.75
  6. Step 6: Final answer
    x = 7,895.52

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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.