Home / 15,539.88-21,446.40-8,825.80

Finding the Fourth Proportional to 15,539.88, 21,446.40 and 8,825.80

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Solution

The fourth proportional to 15,539.88, 21,446.40 and 8,825.80 is: 12,180.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,539.88 : 21,446.40 = 8,825.80 : x
  2. Step 2: Convert to fraction form
    15,539.88/21,446.40 = 8,825.80/x
  3. Step 3: Cross multiply
    15,539.88x = 21,446.40 × 8,825.80
  4. Step 4: Simplify right side
    15,539.88x = 189,281,637.12
  5. Step 5: Solve for x
    x = 189,281,637.12/15,539.88
  6. Step 6: Final answer
    x = 12,180.38

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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.