Home / 39,630.16-54,689.58-21,725.32

Finding the Fourth Proportional to 39,630.16, 54,689.58 and 21,725.32

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Solution

The fourth proportional to 39,630.16, 54,689.58 and 21,725.32 is: 29,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.16 : 54,689.58 = 21,725.32 : x
  2. Step 2: Convert to fraction form
    39,630.16/54,689.58 = 21,725.32/x
  3. Step 3: Cross multiply
    39,630.16x = 54,689.58 × 21,725.32
  4. Step 4: Simplify right side
    39,630.16x = 1,188,148,626.17
  5. Step 5: Solve for x
    x = 1,188,148,626.17/39,630.16
  6. Step 6: Final answer
    x = 29,980.92

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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.