Home / 21,720.21-32,397.71-19,727.00

Finding the Fourth Proportional to 21,720.21, 32,397.71 and 19,727.00

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Solution

The fourth proportional to 21,720.21, 32,397.71 and 19,727.00 is: 29,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.21 : 32,397.71 = 19,727.00 : x
  2. Step 2: Convert to fraction form
    21,720.21/32,397.71 = 19,727.00/x
  3. Step 3: Cross multiply
    21,720.21x = 32,397.71 × 19,727.00
  4. Step 4: Simplify right side
    21,720.21x = 639,109,364.55
  5. Step 5: Solve for x
    x = 639,109,364.55/21,720.21
  6. Step 6: Final answer
    x = 29,424.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.