Home / 15,001.21-20,700.82-8,958.28

Finding the Fourth Proportional to 15,001.21, 20,700.82 and 8,958.28

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Solution

The fourth proportional to 15,001.21, 20,700.82 and 8,958.28 is: 12,361.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.21 : 20,700.82 = 8,958.28 : x
  2. Step 2: Convert to fraction form
    15,001.21/20,700.82 = 8,958.28/x
  3. Step 3: Cross multiply
    15,001.21x = 20,700.82 × 8,958.28
  4. Step 4: Simplify right side
    15,001.21x = 185,443,669.23
  5. Step 5: Solve for x
    x = 185,443,669.23/15,001.21
  6. Step 6: Final answer
    x = 12,361.91

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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.