Home / 20,088.41-30,128.29-12,682.98

Finding the Fourth Proportional to 20,088.41, 30,128.29 and 12,682.98

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Solution

The fourth proportional to 20,088.41, 30,128.29 and 12,682.98 is: 19,021.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.41 : 30,128.29 = 12,682.98 : x
  2. Step 2: Convert to fraction form
    20,088.41/30,128.29 = 12,682.98/x
  3. Step 3: Cross multiply
    20,088.41x = 30,128.29 × 12,682.98
  4. Step 4: Simplify right side
    20,088.41x = 382,116,467.80
  5. Step 5: Solve for x
    x = 382,116,467.80/20,088.41
  6. Step 6: Final answer
    x = 19,021.74

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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.