Home / 13,710.44-20,557.89-5,385.92

Finding the Fourth Proportional to 13,710.44, 20,557.89 and 5,385.92

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Solution

The fourth proportional to 13,710.44, 20,557.89 and 5,385.92 is: 8,075.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.44 : 20,557.89 = 5,385.92 : x
  2. Step 2: Convert to fraction form
    13,710.44/20,557.89 = 5,385.92/x
  3. Step 3: Cross multiply
    13,710.44x = 20,557.89 × 5,385.92
  4. Step 4: Simplify right side
    13,710.44x = 110,723,048.12
  5. Step 5: Solve for x
    x = 110,723,048.12/13,710.44
  6. Step 6: Final answer
    x = 8,075.82

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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.