Home / 13,220.15-19,830.29-4,455.14

Finding the Fourth Proportional to 13,220.15, 19,830.29 and 4,455.14

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Solution

The fourth proportional to 13,220.15, 19,830.29 and 4,455.14 is: 6,682.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.15 : 19,830.29 = 4,455.14 : x
  2. Step 2: Convert to fraction form
    13,220.15/19,830.29 = 4,455.14/x
  3. Step 3: Cross multiply
    13,220.15x = 19,830.29 × 4,455.14
  4. Step 4: Simplify right side
    13,220.15x = 88,346,596.76
  5. Step 5: Solve for x
    x = 88,346,596.76/13,220.15
  6. Step 6: Final answer
    x = 6,682.73

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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.