Home / 21,311.37-29,412.54-12,240.30

Finding the Fourth Proportional to 21,311.37, 29,412.54 and 12,240.30

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Solution

The fourth proportional to 21,311.37, 29,412.54 and 12,240.30 is: 16,893.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.37 : 29,412.54 = 12,240.30 : x
  2. Step 2: Convert to fraction form
    21,311.37/29,412.54 = 12,240.30/x
  3. Step 3: Cross multiply
    21,311.37x = 29,412.54 × 12,240.30
  4. Step 4: Simplify right side
    21,311.37x = 360,018,313.36
  5. Step 5: Solve for x
    x = 360,018,313.36/21,311.37
  6. Step 6: Final answer
    x = 16,893.25

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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.