Home / 20,927.24-28,878.90-12,537.80

Finding the Fourth Proportional to 20,927.24, 28,878.90 and 12,537.80

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Solution

The fourth proportional to 20,927.24, 28,878.90 and 12,537.80 is: 17,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.24 : 28,878.90 = 12,537.80 : x
  2. Step 2: Convert to fraction form
    20,927.24/28,878.90 = 12,537.80/x
  3. Step 3: Cross multiply
    20,927.24x = 28,878.90 × 12,537.80
  4. Step 4: Simplify right side
    20,927.24x = 362,077,872.42
  5. Step 5: Solve for x
    x = 362,077,872.42/20,927.24
  6. Step 6: Final answer
    x = 17,301.75

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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.