Home / 20,548.80-30,810.24-12,746.88

Finding the Fourth Proportional to 20,548.80, 30,810.24 and 12,746.88

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Solution

The fourth proportional to 20,548.80, 30,810.24 and 12,746.88 is: 19,112.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.80 : 30,810.24 = 12,746.88 : x
  2. Step 2: Convert to fraction form
    20,548.80/30,810.24 = 12,746.88/x
  3. Step 3: Cross multiply
    20,548.80x = 30,810.24 × 12,746.88
  4. Step 4: Simplify right side
    20,548.80x = 392,734,432.05
  5. Step 5: Solve for x
    x = 392,734,432.05/20,548.80
  6. Step 6: Final answer
    x = 19,112.28

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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.