Home / 23,027.60-31,778.80-12,955.80

Finding the Fourth Proportional to 23,027.60, 31,778.80 and 12,955.80

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Solution

The fourth proportional to 23,027.60, 31,778.80 and 12,955.80 is: 17,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,027.60 : 31,778.80 = 12,955.80 : x
  2. Step 2: Convert to fraction form
    23,027.60/31,778.80 = 12,955.80/x
  3. Step 3: Cross multiply
    23,027.60x = 31,778.80 × 12,955.80
  4. Step 4: Simplify right side
    23,027.60x = 411,719,777.04
  5. Step 5: Solve for x
    x = 411,719,777.04/23,027.60
  6. Step 6: Final answer
    x = 17,879.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.