Home / 21,223.60-31,814.40-9,383.80

Finding the Fourth Proportional to 21,223.60, 31,814.40 and 9,383.80

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Solution

The fourth proportional to 21,223.60, 31,814.40 and 9,383.80 is: 14,066.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.60 : 31,814.40 = 9,383.80 : x
  2. Step 2: Convert to fraction form
    21,223.60/31,814.40 = 9,383.80/x
  3. Step 3: Cross multiply
    21,223.60x = 31,814.40 × 9,383.80
  4. Step 4: Simplify right side
    21,223.60x = 298,539,966.72
  5. Step 5: Solve for x
    x = 298,539,966.72/21,223.60
  6. Step 6: Final answer
    x = 14,066.42

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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.