Home / 20,652.63-28,500.55-12,154.69

Finding the Fourth Proportional to 20,652.63, 28,500.55 and 12,154.69

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Solution

The fourth proportional to 20,652.63, 28,500.55 and 12,154.69 is: 16,773.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.63 : 28,500.55 = 12,154.69 : x
  2. Step 2: Convert to fraction form
    20,652.63/28,500.55 = 12,154.69/x
  3. Step 3: Cross multiply
    20,652.63x = 28,500.55 × 12,154.69
  4. Step 4: Simplify right side
    20,652.63x = 346,415,338.23
  5. Step 5: Solve for x
    x = 346,415,338.23/20,652.63
  6. Step 6: Final answer
    x = 16,773.43

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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.