Home / 21,558.90-29,751.24-12,127.46

Finding the Fourth Proportional to 21,558.90, 29,751.24 and 12,127.46

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Solution

The fourth proportional to 21,558.90, 29,751.24 and 12,127.46 is: 16,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.90 : 29,751.24 = 12,127.46 : x
  2. Step 2: Convert to fraction form
    21,558.90/29,751.24 = 12,127.46/x
  3. Step 3: Cross multiply
    21,558.90x = 29,751.24 × 12,127.46
  4. Step 4: Simplify right side
    21,558.90x = 360,807,047.43
  5. Step 5: Solve for x
    x = 360,807,047.43/21,558.90
  6. Step 6: Final answer
    x = 16,735.87

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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.