Home / 20,325.81-28,048.08-11,371.66

Finding the Fourth Proportional to 20,325.81, 28,048.08 and 11,371.66

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Solution

The fourth proportional to 20,325.81, 28,048.08 and 11,371.66 is: 15,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.81 : 28,048.08 = 11,371.66 : x
  2. Step 2: Convert to fraction form
    20,325.81/28,048.08 = 11,371.66/x
  3. Step 3: Cross multiply
    20,325.81x = 28,048.08 × 11,371.66
  4. Step 4: Simplify right side
    20,325.81x = 318,953,229.41
  5. Step 5: Solve for x
    x = 318,953,229.41/20,325.81
  6. Step 6: Final answer
    x = 15,692.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.