Home / 21,164.70-29,208.24-12,090.84

Finding the Fourth Proportional to 21,164.70, 29,208.24 and 12,090.84

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Solution

The fourth proportional to 21,164.70, 29,208.24 and 12,090.84 is: 16,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.70 : 29,208.24 = 12,090.84 : x
  2. Step 2: Convert to fraction form
    21,164.70/29,208.24 = 12,090.84/x
  3. Step 3: Cross multiply
    21,164.70x = 29,208.24 × 12,090.84
  4. Step 4: Simplify right side
    21,164.70x = 353,152,156.52
  5. Step 5: Solve for x
    x = 353,152,156.52/21,164.70
  6. Step 6: Final answer
    x = 16,685.90

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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.