Home / 21,440.89-29,588.40-12,009.64

Finding the Fourth Proportional to 21,440.89, 29,588.40 and 12,009.64

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Solution

The fourth proportional to 21,440.89, 29,588.40 and 12,009.64 is: 16,573.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.89 : 29,588.40 = 12,009.64 : x
  2. Step 2: Convert to fraction form
    21,440.89/29,588.40 = 12,009.64/x
  3. Step 3: Cross multiply
    21,440.89x = 29,588.40 × 12,009.64
  4. Step 4: Simplify right side
    21,440.89x = 355,346,032.18
  5. Step 5: Solve for x
    x = 355,346,032.18/21,440.89
  6. Step 6: Final answer
    x = 16,573.29

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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.