Home / 39,585.16-54,628.50-21,680.92

Finding the Fourth Proportional to 39,585.16, 54,628.50 and 21,680.92

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Solution

The fourth proportional to 39,585.16, 54,628.50 and 21,680.92 is: 29,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,585.16 : 54,628.50 = 21,680.92 : x
  2. Step 2: Convert to fraction form
    39,585.16/54,628.50 = 21,680.92/x
  3. Step 3: Cross multiply
    39,585.16x = 54,628.50 × 21,680.92
  4. Step 4: Simplify right side
    39,585.16x = 1,184,396,138.22
  5. Step 5: Solve for x
    x = 1,184,396,138.22/39,585.16
  6. Step 6: Final answer
    x = 29,920.21

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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.