Home / 16,881.60-25,322.40-13,771.20

Finding the Fourth Proportional to 16,881.60, 25,322.40 and 13,771.20

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Solution

The fourth proportional to 16,881.60, 25,322.40 and 13,771.20 is: 20,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,881.60 : 25,322.40 = 13,771.20 : x
  2. Step 2: Convert to fraction form
    16,881.60/25,322.40 = 13,771.20/x
  3. Step 3: Cross multiply
    16,881.60x = 25,322.40 × 13,771.20
  4. Step 4: Simplify right side
    16,881.60x = 348,719,834.88
  5. Step 5: Solve for x
    x = 348,719,834.88/16,881.60
  6. Step 6: Final answer
    x = 20,656.80

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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.