Home / 21,123.36-29,116.80-16,409.16

Finding the Fourth Proportional to 21,123.36, 29,116.80 and 16,409.16

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Solution

The fourth proportional to 21,123.36, 29,116.80 and 16,409.16 is: 22,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.36 : 29,116.80 = 16,409.16 : x
  2. Step 2: Convert to fraction form
    21,123.36/29,116.80 = 16,409.16/x
  3. Step 3: Cross multiply
    21,123.36x = 29,116.80 × 16,409.16
  4. Step 4: Simplify right side
    21,123.36x = 477,782,229.89
  5. Step 5: Solve for x
    x = 477,782,229.89/21,123.36
  6. Step 6: Final answer
    x = 22,618.67

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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.