Home / 39,630.10-54,689.20-21,725.08

Finding the Fourth Proportional to 39,630.10, 54,689.20 and 21,725.08

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Solution

The fourth proportional to 39,630.10, 54,689.20 and 21,725.08 is: 29,980.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.10 : 54,689.20 = 21,725.08 : x
  2. Step 2: Convert to fraction form
    39,630.10/54,689.20 = 21,725.08/x
  3. Step 3: Cross multiply
    39,630.10x = 54,689.20 × 21,725.08
  4. Step 4: Simplify right side
    39,630.10x = 1,188,127,245.14
  5. Step 5: Solve for x
    x = 1,188,127,245.14/39,630.10
  6. Step 6: Final answer
    x = 29,980.43

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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.