Home / 39,214.40-54,116.40-21,309.68

Finding the Fourth Proportional to 39,214.40, 54,116.40 and 21,309.68

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Solution

The fourth proportional to 39,214.40, 54,116.40 and 21,309.68 is: 29,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,214.40 : 54,116.40 = 21,309.68 : x
  2. Step 2: Convert to fraction form
    39,214.40/54,116.40 = 21,309.68/x
  3. Step 3: Cross multiply
    39,214.40x = 54,116.40 × 21,309.68
  4. Step 4: Simplify right side
    39,214.40x = 1,153,203,166.75
  5. Step 5: Solve for x
    x = 1,153,203,166.75/39,214.40
  6. Step 6: Final answer
    x = 29,407.65

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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.