Home / 21,228.57-29,287.95-12,733.44

Finding the Fourth Proportional to 21,228.57, 29,287.95 and 12,733.44

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Solution

The fourth proportional to 21,228.57, 29,287.95 and 12,733.44 is: 17,567.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.57 : 29,287.95 = 12,733.44 : x
  2. Step 2: Convert to fraction form
    21,228.57/29,287.95 = 12,733.44/x
  3. Step 3: Cross multiply
    21,228.57x = 29,287.95 × 12,733.44
  4. Step 4: Simplify right side
    21,228.57x = 372,936,354.05
  5. Step 5: Solve for x
    x = 372,936,354.05/21,228.57
  6. Step 6: Final answer
    x = 17,567.66

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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.