Home / 21,720.24-29,973.48-11,784.24

Finding the Fourth Proportional to 21,720.24, 29,973.48 and 11,784.24

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Solution

The fourth proportional to 21,720.24, 29,973.48 and 11,784.24 is: 16,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.24 : 29,973.48 = 11,784.24 : x
  2. Step 2: Convert to fraction form
    21,720.24/29,973.48 = 11,784.24/x
  3. Step 3: Cross multiply
    21,720.24x = 29,973.48 × 11,784.24
  4. Step 4: Simplify right side
    21,720.24x = 353,214,681.96
  5. Step 5: Solve for x
    x = 353,214,681.96/21,720.24
  6. Step 6: Final answer
    x = 16,262.01

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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.