Home / 21,184.58-31,783.80-15,256.58

Finding the Fourth Proportional to 21,184.58, 31,783.80 and 15,256.58

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Solution

The fourth proportional to 21,184.58, 31,783.80 and 15,256.58 is: 22,889.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.58 : 31,783.80 = 15,256.58 : x
  2. Step 2: Convert to fraction form
    21,184.58/31,783.80 = 15,256.58/x
  3. Step 3: Cross multiply
    21,184.58x = 31,783.80 × 15,256.58
  4. Step 4: Simplify right side
    21,184.58x = 484,912,087.40
  5. Step 5: Solve for x
    x = 484,912,087.40/21,184.58
  6. Step 6: Final answer
    x = 22,889.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.