Home / 39,209.64-54,109.68-21,304.76

Finding the Fourth Proportional to 39,209.64, 54,109.68 and 21,304.76

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Solution

The fourth proportional to 39,209.64, 54,109.68 and 21,304.76 is: 29,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,209.64 : 54,109.68 = 21,304.76 : x
  2. Step 2: Convert to fraction form
    39,209.64/54,109.68 = 21,304.76/x
  3. Step 3: Cross multiply
    39,209.64x = 54,109.68 × 21,304.76
  4. Step 4: Simplify right side
    39,209.64x = 1,152,793,746.08
  5. Step 5: Solve for x
    x = 1,152,793,746.08/39,209.64
  6. Step 6: Final answer
    x = 29,400.77

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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.