Home / 58,128.96-87,173.82-18,676.80

Finding the Fourth Proportional to 58,128.96, 87,173.82 and 18,676.80

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Solution

The fourth proportional to 58,128.96, 87,173.82 and 18,676.80 is: 28,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,128.96 : 87,173.82 = 18,676.80 : x
  2. Step 2: Convert to fraction form
    58,128.96/87,173.82 = 18,676.80/x
  3. Step 3: Cross multiply
    58,128.96x = 87,173.82 × 18,676.80
  4. Step 4: Simplify right side
    58,128.96x = 1,628,128,001.38
  5. Step 5: Solve for x
    x = 1,628,128,001.38/58,128.96
  6. Step 6: Final answer
    x = 28,008.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.