Home / 20,664.98-28,507.65-12,275.54

Finding the Fourth Proportional to 20,664.98, 28,507.65 and 12,275.54

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Solution

The fourth proportional to 20,664.98, 28,507.65 and 12,275.54 is: 16,934.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.98 : 28,507.65 = 12,275.54 : x
  2. Step 2: Convert to fraction form
    20,664.98/28,507.65 = 12,275.54/x
  3. Step 3: Cross multiply
    20,664.98x = 28,507.65 × 12,275.54
  4. Step 4: Simplify right side
    20,664.98x = 349,946,797.88
  5. Step 5: Solve for x
    x = 349,946,797.88/20,664.98
  6. Step 6: Final answer
    x = 16,934.29

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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.