Home / 20,389.70-30,548.10-16,671.80

Finding the Fourth Proportional to 20,389.70, 30,548.10 and 16,671.80

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Solution

The fourth proportional to 20,389.70, 30,548.10 and 16,671.80 is: 24,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.70 : 30,548.10 = 16,671.80 : x
  2. Step 2: Convert to fraction form
    20,389.70/30,548.10 = 16,671.80/x
  3. Step 3: Cross multiply
    20,389.70x = 30,548.10 × 16,671.80
  4. Step 4: Simplify right side
    20,389.70x = 509,291,813.58
  5. Step 5: Solve for x
    x = 509,291,813.58/20,389.70
  6. Step 6: Final answer
    x = 24,977.90

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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.