Home / 13,422.50-20,137.32-4,657.40

Finding the Fourth Proportional to 13,422.50, 20,137.32 and 4,657.40

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Solution

The fourth proportional to 13,422.50, 20,137.32 and 4,657.40 is: 6,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.50 : 20,137.32 = 4,657.40 : x
  2. Step 2: Convert to fraction form
    13,422.50/20,137.32 = 4,657.40/x
  3. Step 3: Cross multiply
    13,422.50x = 20,137.32 × 4,657.40
  4. Step 4: Simplify right side
    13,422.50x = 93,787,554.17
  5. Step 5: Solve for x
    x = 93,787,554.17/13,422.50
  6. Step 6: Final answer
    x = 6,987.34

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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.