Home / 13,422.48-20,133.72-4,657.40

Finding the Fourth Proportional to 13,422.48, 20,133.72 and 4,657.40

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Solution

The fourth proportional to 13,422.48, 20,133.72 and 4,657.40 is: 6,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.48 : 20,133.72 = 4,657.40 : x
  2. Step 2: Convert to fraction form
    13,422.48/20,133.72 = 4,657.40/x
  3. Step 3: Cross multiply
    13,422.48x = 20,133.72 × 4,657.40
  4. Step 4: Simplify right side
    13,422.48x = 93,770,787.53
  5. Step 5: Solve for x
    x = 93,770,787.53/13,422.48
  6. Step 6: Final answer
    x = 6,986.10

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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.