Home / 21,559.58-29,739.33-13,161.50

Finding the Fourth Proportional to 21,559.58, 29,739.33 and 13,161.50

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Solution

The fourth proportional to 21,559.58, 29,739.33 and 13,161.50 is: 18,155.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.58 : 29,739.33 = 13,161.50 : x
  2. Step 2: Convert to fraction form
    21,559.58/29,739.33 = 13,161.50/x
  3. Step 3: Cross multiply
    21,559.58x = 29,739.33 × 13,161.50
  4. Step 4: Simplify right side
    21,559.58x = 391,414,191.80
  5. Step 5: Solve for x
    x = 391,414,191.80/21,559.58
  6. Step 6: Final answer
    x = 18,155.00

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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.