Home / 21,653.28-29,892.48-13,703.52

Finding the Fourth Proportional to 21,653.28, 29,892.48 and 13,703.52

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Solution

The fourth proportional to 21,653.28, 29,892.48 and 13,703.52 is: 18,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.28 : 29,892.48 = 13,703.52 : x
  2. Step 2: Convert to fraction form
    21,653.28/29,892.48 = 13,703.52/x
  3. Step 3: Cross multiply
    21,653.28x = 29,892.48 × 13,703.52
  4. Step 4: Simplify right side
    21,653.28x = 409,632,197.53
  5. Step 5: Solve for x
    x = 409,632,197.53/21,653.28
  6. Step 6: Final answer
    x = 18,917.79

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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.