Home / 10,518.86-15,784.32-4,277.72

Finding the Fourth Proportional to 10,518.86, 15,784.32 and 4,277.72

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Solution

The fourth proportional to 10,518.86, 15,784.32 and 4,277.72 is: 6,419.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.86 : 15,784.32 = 4,277.72 : x
  2. Step 2: Convert to fraction form
    10,518.86/15,784.32 = 4,277.72/x
  3. Step 3: Cross multiply
    10,518.86x = 15,784.32 × 4,277.72
  4. Step 4: Simplify right side
    10,518.86x = 67,520,822.43
  5. Step 5: Solve for x
    x = 67,520,822.43/10,518.86
  6. Step 6: Final answer
    x = 6,419.03

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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.