Home / 13,751.88-18,977.95-7,784.45

Finding the Fourth Proportional to 13,751.88, 18,977.95 and 7,784.45

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Solution

The fourth proportional to 13,751.88, 18,977.95 and 7,784.45 is: 10,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.88 : 18,977.95 = 7,784.45 : x
  2. Step 2: Convert to fraction form
    13,751.88/18,977.95 = 7,784.45/x
  3. Step 3: Cross multiply
    13,751.88x = 18,977.95 × 7,784.45
  4. Step 4: Simplify right side
    13,751.88x = 147,732,951.85
  5. Step 5: Solve for x
    x = 147,732,951.85/13,751.88
  6. Step 6: Final answer
    x = 10,742.75

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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.