Home / 13,362.40-18,432.06-8,825.12

Finding the Fourth Proportional to 13,362.40, 18,432.06 and 8,825.12

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Solution

The fourth proportional to 13,362.40, 18,432.06 and 8,825.12 is: 12,173.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.40 : 18,432.06 = 8,825.12 : x
  2. Step 2: Convert to fraction form
    13,362.40/18,432.06 = 8,825.12/x
  3. Step 3: Cross multiply
    13,362.40x = 18,432.06 × 8,825.12
  4. Step 4: Simplify right side
    13,362.40x = 162,665,141.35
  5. Step 5: Solve for x
    x = 162,665,141.35/13,362.40
  6. Step 6: Final answer
    x = 12,173.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.