Home / 21,777.84-30,052.53-12,825.72

Finding the Fourth Proportional to 21,777.84, 30,052.53 and 12,825.72

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Solution

The fourth proportional to 21,777.84, 30,052.53 and 12,825.72 is: 17,698.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.84 : 30,052.53 = 12,825.72 : x
  2. Step 2: Convert to fraction form
    21,777.84/30,052.53 = 12,825.72/x
  3. Step 3: Cross multiply
    21,777.84x = 30,052.53 × 12,825.72
  4. Step 4: Simplify right side
    21,777.84x = 385,445,335.07
  5. Step 5: Solve for x
    x = 385,445,335.07/21,777.84
  6. Step 6: Final answer
    x = 17,698.97

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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.