Home / 13,245.68-19,871.45-4,480.40

Finding the Fourth Proportional to 13,245.68, 19,871.45 and 4,480.40

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Solution

The fourth proportional to 13,245.68, 19,871.45 and 4,480.40 is: 6,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.68 : 19,871.45 = 4,480.40 : x
  2. Step 2: Convert to fraction form
    13,245.68/19,871.45 = 4,480.40/x
  3. Step 3: Cross multiply
    13,245.68x = 19,871.45 × 4,480.40
  4. Step 4: Simplify right side
    13,245.68x = 89,032,022.18
  5. Step 5: Solve for x
    x = 89,032,022.18/13,245.68
  6. Step 6: Final answer
    x = 6,721.59

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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.