Home / 20,124.28-30,129.90-16,353.64

Finding the Fourth Proportional to 20,124.28, 30,129.90 and 16,353.64

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Solution

The fourth proportional to 20,124.28, 30,129.90 and 16,353.64 is: 24,484.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.28 : 30,129.90 = 16,353.64 : x
  2. Step 2: Convert to fraction form
    20,124.28/30,129.90 = 16,353.64/x
  3. Step 3: Cross multiply
    20,124.28x = 30,129.90 × 16,353.64
  4. Step 4: Simplify right side
    20,124.28x = 492,733,537.84
  5. Step 5: Solve for x
    x = 492,733,537.84/20,124.28
  6. Step 6: Final answer
    x = 24,484.53

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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.