Home / 21,403.52-29,538.28-11,971.52

Finding the Fourth Proportional to 21,403.52, 29,538.28 and 11,971.52

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Solution

The fourth proportional to 21,403.52, 29,538.28 and 11,971.52 is: 16,521.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.52 : 29,538.28 = 11,971.52 : x
  2. Step 2: Convert to fraction form
    21,403.52/29,538.28 = 11,971.52/x
  3. Step 3: Cross multiply
    21,403.52x = 29,538.28 × 11,971.52
  4. Step 4: Simplify right side
    21,403.52x = 353,618,109.79
  5. Step 5: Solve for x
    x = 353,618,109.79/21,403.52
  6. Step 6: Final answer
    x = 16,521.49

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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.