Home / 20,484.28-28,261.74-12,099.16

Finding the Fourth Proportional to 20,484.28, 28,261.74 and 12,099.16

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Solution

The fourth proportional to 20,484.28, 28,261.74 and 12,099.16 is: 16,692.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.28 : 28,261.74 = 12,099.16 : x
  2. Step 2: Convert to fraction form
    20,484.28/28,261.74 = 12,099.16/x
  3. Step 3: Cross multiply
    20,484.28x = 28,261.74 × 12,099.16
  4. Step 4: Simplify right side
    20,484.28x = 341,943,314.14
  5. Step 5: Solve for x
    x = 341,943,314.14/20,484.28
  6. Step 6: Final answer
    x = 16,692.96

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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.