Home / 15,777.75-21,759.57-13,652.60

Finding the Fourth Proportional to 15,777.75, 21,759.57 and 13,652.60

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Solution

The fourth proportional to 15,777.75, 21,759.57 and 13,652.60 is: 18,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.75 : 21,759.57 = 13,652.60 : x
  2. Step 2: Convert to fraction form
    15,777.75/21,759.57 = 13,652.60/x
  3. Step 3: Cross multiply
    15,777.75x = 21,759.57 × 13,652.60
  4. Step 4: Simplify right side
    15,777.75x = 297,074,596.58
  5. Step 5: Solve for x
    x = 297,074,596.58/15,777.75
  6. Step 6: Final answer
    x = 18,828.70

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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.