Home / 13,215.40-19,825.80-4,451.20

Finding the Fourth Proportional to 13,215.40, 19,825.80 and 4,451.20

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Solution

The fourth proportional to 13,215.40, 19,825.80 and 4,451.20 is: 6,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.40 : 19,825.80 = 4,451.20 : x
  2. Step 2: Convert to fraction form
    13,215.40/19,825.80 = 4,451.20/x
  3. Step 3: Cross multiply
    13,215.40x = 19,825.80 × 4,451.20
  4. Step 4: Simplify right side
    13,215.40x = 88,248,600.96
  5. Step 5: Solve for x
    x = 88,248,600.96/13,215.40
  6. Step 6: Final answer
    x = 6,677.71

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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.