Home / 28,500.78-42,692.85-16,778.46

Finding the Fourth Proportional to 28,500.78, 42,692.85 and 16,778.46

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Solution

The fourth proportional to 28,500.78, 42,692.85 and 16,778.46 is: 25,133.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.78 : 42,692.85 = 16,778.46 : x
  2. Step 2: Convert to fraction form
    28,500.78/42,692.85 = 16,778.46/x
  3. Step 3: Cross multiply
    28,500.78x = 42,692.85 × 16,778.46
  4. Step 4: Simplify right side
    28,500.78x = 716,320,276.01
  5. Step 5: Solve for x
    x = 716,320,276.01/28,500.78
  6. Step 6: Final answer
    x = 25,133.36

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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.