Home / 13,915.21-20,846.67-6,887.07

Finding the Fourth Proportional to 13,915.21, 20,846.67 and 6,887.07

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Solution

The fourth proportional to 13,915.21, 20,846.67 and 6,887.07 is: 10,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.21 : 20,846.67 = 6,887.07 : x
  2. Step 2: Convert to fraction form
    13,915.21/20,846.67 = 6,887.07/x
  3. Step 3: Cross multiply
    13,915.21x = 20,846.67 × 6,887.07
  4. Step 4: Simplify right side
    13,915.21x = 143,572,475.56
  5. Step 5: Solve for x
    x = 143,572,475.56/13,915.21
  6. Step 6: Final answer
    x = 10,317.67

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1.5x scale

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.