Home / 13,718.85-20,561.87-6,315.86

Finding the Fourth Proportional to 13,718.85, 20,561.87 and 6,315.86

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Solution

The fourth proportional to 13,718.85, 20,561.87 and 6,315.86 is: 9,466.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.85 : 20,561.87 = 6,315.86 : x
  2. Step 2: Convert to fraction form
    13,718.85/20,561.87 = 6,315.86/x
  3. Step 3: Cross multiply
    13,718.85x = 20,561.87 × 6,315.86
  4. Step 4: Simplify right side
    13,718.85x = 129,865,892.26
  5. Step 5: Solve for x
    x = 129,865,892.26/13,718.85
  6. Step 6: Final answer
    x = 9,466.24

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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.