Home / 20,936.95-28,893.11-11,376.91

Finding the Fourth Proportional to 20,936.95, 28,893.11 and 11,376.91

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Solution

The fourth proportional to 20,936.95, 28,893.11 and 11,376.91 is: 15,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.95 : 28,893.11 = 11,376.91 : x
  2. Step 2: Convert to fraction form
    20,936.95/28,893.11 = 11,376.91/x
  3. Step 3: Cross multiply
    20,936.95x = 28,893.11 × 11,376.91
  4. Step 4: Simplify right side
    20,936.95x = 328,714,312.09
  5. Step 5: Solve for x
    x = 328,714,312.09/20,936.95
  6. Step 6: Final answer
    x = 15,700.20

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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.