Home / 20,483.10-28,251.45-12,099.60

Finding the Fourth Proportional to 20,483.10, 28,251.45 and 12,099.60

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Solution

The fourth proportional to 20,483.10, 28,251.45 and 12,099.60 is: 16,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.10 : 28,251.45 = 12,099.60 : x
  2. Step 2: Convert to fraction form
    20,483.10/28,251.45 = 12,099.60/x
  3. Step 3: Cross multiply
    20,483.10x = 28,251.45 × 12,099.60
  4. Step 4: Simplify right side
    20,483.10x = 341,831,244.42
  5. Step 5: Solve for x
    x = 341,831,244.42/20,483.10
  6. Step 6: Final answer
    x = 16,688.45

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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.