Home / 12,117.60-18,172.88-4,720.41

Finding the Fourth Proportional to 12,117.60, 18,172.88 and 4,720.41

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Solution

The fourth proportional to 12,117.60, 18,172.88 and 4,720.41 is: 7,079.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.60 : 18,172.88 = 4,720.41 : x
  2. Step 2: Convert to fraction form
    12,117.60/18,172.88 = 4,720.41/x
  3. Step 3: Cross multiply
    12,117.60x = 18,172.88 × 4,720.41
  4. Step 4: Simplify right side
    12,117.60x = 85,783,353.62
  5. Step 5: Solve for x
    x = 85,783,353.62/12,117.60
  6. Step 6: Final answer
    x = 7,079.24

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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.