Home / 20,476.58-30,675.48-12,555.98

Finding the Fourth Proportional to 20,476.58, 30,675.48 and 12,555.98

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Solution

The fourth proportional to 20,476.58, 30,675.48 and 12,555.98 is: 18,809.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.58 : 30,675.48 = 12,555.98 : x
  2. Step 2: Convert to fraction form
    20,476.58/30,675.48 = 12,555.98/x
  3. Step 3: Cross multiply
    20,476.58x = 30,675.48 × 12,555.98
  4. Step 4: Simplify right side
    20,476.58x = 385,160,798.59
  5. Step 5: Solve for x
    x = 385,160,798.59/20,476.58
  6. Step 6: Final answer
    x = 18,809.82

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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.