Home / 13,709.61-20,561.40-3,849.90

Finding the Fourth Proportional to 13,709.61, 20,561.40 and 3,849.90

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Solution

The fourth proportional to 13,709.61, 20,561.40 and 3,849.90 is: 5,774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.61 : 20,561.40 = 3,849.90 : x
  2. Step 2: Convert to fraction form
    13,709.61/20,561.40 = 3,849.90/x
  3. Step 3: Cross multiply
    13,709.61x = 20,561.40 × 3,849.90
  4. Step 4: Simplify right side
    13,709.61x = 79,159,333.86
  5. Step 5: Solve for x
    x = 79,159,333.86/13,709.61
  6. Step 6: Final answer
    x = 5,774.00

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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.