Home / 39,157.94-54,038.12-21,252.97

Finding the Fourth Proportional to 39,157.94, 54,038.12 and 21,252.97

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Solution

The fourth proportional to 39,157.94, 54,038.12 and 21,252.97 is: 29,329.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.94 : 54,038.12 = 21,252.97 : x
  2. Step 2: Convert to fraction form
    39,157.94/54,038.12 = 21,252.97/x
  3. Step 3: Cross multiply
    39,157.94x = 54,038.12 × 21,252.97
  4. Step 4: Simplify right side
    39,157.94x = 1,148,470,543.22
  5. Step 5: Solve for x
    x = 1,148,470,543.22/39,157.94
  6. Step 6: Final answer
    x = 29,329.19

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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.