Home / 21,759.36-32,637.60-12,966.72

Finding the Fourth Proportional to 21,759.36, 32,637.60 and 12,966.72

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Solution

The fourth proportional to 21,759.36, 32,637.60 and 12,966.72 is: 19,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.36 : 32,637.60 = 12,966.72 : x
  2. Step 2: Convert to fraction form
    21,759.36/32,637.60 = 12,966.72/x
  3. Step 3: Cross multiply
    21,759.36x = 32,637.60 × 12,966.72
  4. Step 4: Simplify right side
    21,759.36x = 423,202,620.67
  5. Step 5: Solve for x
    x = 423,202,620.67/21,759.36
  6. Step 6: Final answer
    x = 19,449.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.