Home / 38,142.97-52,638.55-21,148.80

Finding the Fourth Proportional to 38,142.97, 52,638.55 and 21,148.80

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Solution

The fourth proportional to 38,142.97, 52,638.55 and 21,148.80 is: 29,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.97 : 52,638.55 = 21,148.80 : x
  2. Step 2: Convert to fraction form
    38,142.97/52,638.55 = 21,148.80/x
  3. Step 3: Cross multiply
    38,142.97x = 52,638.55 × 21,148.80
  4. Step 4: Simplify right side
    38,142.97x = 1,113,242,166.24
  5. Step 5: Solve for x
    x = 1,113,242,166.24/38,142.97
  6. Step 6: Final answer
    x = 29,186.04

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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.