Home / 14,543.11-21,771.60-8,978.56

Finding the Fourth Proportional to 14,543.11, 21,771.60 and 8,978.56

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Solution

The fourth proportional to 14,543.11, 21,771.60 and 8,978.56 is: 13,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,543.11 : 21,771.60 = 8,978.56 : x
  2. Step 2: Convert to fraction form
    14,543.11/21,771.60 = 8,978.56/x
  3. Step 3: Cross multiply
    14,543.11x = 21,771.60 × 8,978.56
  4. Step 4: Simplify right side
    14,543.11x = 195,477,528.80
  5. Step 5: Solve for x
    x = 195,477,528.80/14,543.11
  6. Step 6: Final answer
    x = 13,441.25

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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.