Home / 13,422.24-20,142.54-4,657.10

Finding the Fourth Proportional to 13,422.24, 20,142.54 and 4,657.10

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Solution

The fourth proportional to 13,422.24, 20,142.54 and 4,657.10 is: 6,988.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.24 : 20,142.54 = 4,657.10 : x
  2. Step 2: Convert to fraction form
    13,422.24/20,142.54 = 4,657.10/x
  3. Step 3: Cross multiply
    13,422.24x = 20,142.54 × 4,657.10
  4. Step 4: Simplify right side
    13,422.24x = 93,805,722.32
  5. Step 5: Solve for x
    x = 93,805,722.32/13,422.24
  6. Step 6: Final answer
    x = 6,988.83

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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.