Home / 21,440.88-29,589.30-12,009.51

Finding the Fourth Proportional to 21,440.88, 29,589.30 and 12,009.51

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Solution

The fourth proportional to 21,440.88, 29,589.30 and 12,009.51 is: 16,573.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.88 : 29,589.30 = 12,009.51 : x
  2. Step 2: Convert to fraction form
    21,440.88/29,589.30 = 12,009.51/x
  3. Step 3: Cross multiply
    21,440.88x = 29,589.30 × 12,009.51
  4. Step 4: Simplify right side
    21,440.88x = 355,352,994.24
  5. Step 5: Solve for x
    x = 355,352,994.24/21,440.88
  6. Step 6: Final answer
    x = 16,573.62

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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.