Home / 20,692.40-31,038.60-16,998.80

Finding the Fourth Proportional to 20,692.40, 31,038.60 and 16,998.80

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Solution

The fourth proportional to 20,692.40, 31,038.60 and 16,998.80 is: 25,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.40 : 31,038.60 = 16,998.80 : x
  2. Step 2: Convert to fraction form
    20,692.40/31,038.60 = 16,998.80/x
  3. Step 3: Cross multiply
    20,692.40x = 31,038.60 × 16,998.80
  4. Step 4: Simplify right side
    20,692.40x = 527,618,953.68
  5. Step 5: Solve for x
    x = 527,618,953.68/20,692.40
  6. Step 6: Final answer
    x = 25,498.20

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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.