Home / 21,539.44-29,717.16-13,583.68

Finding the Fourth Proportional to 21,539.44, 29,717.16 and 13,583.68

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Solution

The fourth proportional to 21,539.44, 29,717.16 and 13,583.68 is: 18,740.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.44 : 29,717.16 = 13,583.68 : x
  2. Step 2: Convert to fraction form
    21,539.44/29,717.16 = 13,583.68/x
  3. Step 3: Cross multiply
    21,539.44x = 29,717.16 × 13,583.68
  4. Step 4: Simplify right side
    21,539.44x = 403,668,391.95
  5. Step 5: Solve for x
    x = 403,668,391.95/21,539.44
  6. Step 6: Final answer
    x = 18,740.90

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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.