Home / 20,423.86-28,187.54-12,464.40

Finding the Fourth Proportional to 20,423.86, 28,187.54 and 12,464.40

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Solution

The fourth proportional to 20,423.86, 28,187.54 and 12,464.40 is: 17,202.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.86 : 28,187.54 = 12,464.40 : x
  2. Step 2: Convert to fraction form
    20,423.86/28,187.54 = 12,464.40/x
  3. Step 3: Cross multiply
    20,423.86x = 28,187.54 × 12,464.40
  4. Step 4: Simplify right side
    20,423.86x = 351,340,773.58
  5. Step 5: Solve for x
    x = 351,340,773.58/20,423.86
  6. Step 6: Final answer
    x = 17,202.47

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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.