Home / 39,284.60-54,212.22-21,379.40

Finding the Fourth Proportional to 39,284.60, 54,212.22 and 21,379.40

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Solution

The fourth proportional to 39,284.60, 54,212.22 and 21,379.40 is: 29,503.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,284.60 : 54,212.22 = 21,379.40 : x
  2. Step 2: Convert to fraction form
    39,284.60/54,212.22 = 21,379.40/x
  3. Step 3: Cross multiply
    39,284.60x = 54,212.22 × 21,379.40
  4. Step 4: Simplify right side
    39,284.60x = 1,159,024,736.27
  5. Step 5: Solve for x
    x = 1,159,024,736.27/39,284.60
  6. Step 6: Final answer
    x = 29,503.28

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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.