Home / 13,221.66-19,828.17-4,455.30

Finding the Fourth Proportional to 13,221.66, 19,828.17 and 4,455.30

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Solution

The fourth proportional to 13,221.66, 19,828.17 and 4,455.30 is: 6,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.66 : 19,828.17 = 4,455.30 : x
  2. Step 2: Convert to fraction form
    13,221.66/19,828.17 = 4,455.30/x
  3. Step 3: Cross multiply
    13,221.66x = 19,828.17 × 4,455.30
  4. Step 4: Simplify right side
    13,221.66x = 88,340,445.80
  5. Step 5: Solve for x
    x = 88,340,445.80/13,221.66
  6. Step 6: Final answer
    x = 6,681.49

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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.