Home / 20,995.11-28,977.03-12,045.58

Finding the Fourth Proportional to 20,995.11, 28,977.03 and 12,045.58

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Solution

The fourth proportional to 20,995.11, 28,977.03 and 12,045.58 is: 16,625.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.11 : 28,977.03 = 12,045.58 : x
  2. Step 2: Convert to fraction form
    20,995.11/28,977.03 = 12,045.58/x
  3. Step 3: Cross multiply
    20,995.11x = 28,977.03 × 12,045.58
  4. Step 4: Simplify right side
    20,995.11x = 349,045,060.58
  5. Step 5: Solve for x
    x = 349,045,060.58/20,995.11
  6. Step 6: Final answer
    x = 16,625.06

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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.