Home / 28,913.12-43,363.92-13,328.48

Finding the Fourth Proportional to 28,913.12, 43,363.92 and 13,328.48

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Solution

The fourth proportional to 28,913.12, 43,363.92 and 13,328.48 is: 19,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.12 : 43,363.92 = 13,328.48 : x
  2. Step 2: Convert to fraction form
    28,913.12/43,363.92 = 13,328.48/x
  3. Step 3: Cross multiply
    28,913.12x = 43,363.92 × 13,328.48
  4. Step 4: Simplify right side
    28,913.12x = 577,975,140.44
  5. Step 5: Solve for x
    x = 577,975,140.44/28,913.12
  6. Step 6: Final answer
    x = 19,990.06

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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.