Home / 21,549.92-29,738.81-12,118.48

Finding the Fourth Proportional to 21,549.92, 29,738.81 and 12,118.48

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Solution

The fourth proportional to 21,549.92, 29,738.81 and 12,118.48 is: 16,723.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.92 : 29,738.81 = 12,118.48 : x
  2. Step 2: Convert to fraction form
    21,549.92/29,738.81 = 12,118.48/x
  3. Step 3: Cross multiply
    21,549.92x = 29,738.81 × 12,118.48
  4. Step 4: Simplify right side
    21,549.92x = 360,389,130.16
  5. Step 5: Solve for x
    x = 360,389,130.16/21,549.92
  6. Step 6: Final answer
    x = 16,723.46

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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.