Home / 13,222.28-19,826.13-5,421.98

Finding the Fourth Proportional to 13,222.28, 19,826.13 and 5,421.98

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Solution

The fourth proportional to 13,222.28, 19,826.13 and 5,421.98 is: 8,129.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.28 : 19,826.13 = 5,421.98 : x
  2. Step 2: Convert to fraction form
    13,222.28/19,826.13 = 5,421.98/x
  3. Step 3: Cross multiply
    13,222.28x = 19,826.13 × 5,421.98
  4. Step 4: Simplify right side
    13,222.28x = 107,496,880.34
  5. Step 5: Solve for x
    x = 107,496,880.34/13,222.28
  6. Step 6: Final answer
    x = 8,129.98

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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.