Home / 13,315.18-18,375.84-7,651.76

Finding the Fourth Proportional to 13,315.18, 18,375.84 and 7,651.76

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Solution

The fourth proportional to 13,315.18, 18,375.84 and 7,651.76 is: 10,559.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.18 : 18,375.84 = 7,651.76 : x
  2. Step 2: Convert to fraction form
    13,315.18/18,375.84 = 7,651.76/x
  3. Step 3: Cross multiply
    13,315.18x = 18,375.84 × 7,651.76
  4. Step 4: Simplify right side
    13,315.18x = 140,607,479.22
  5. Step 5: Solve for x
    x = 140,607,479.22/13,315.18
  6. Step 6: Final answer
    x = 10,559.94

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1.5x scale

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.