Home / 21,402.52-29,534.88-11,971.16

Finding the Fourth Proportional to 21,402.52, 29,534.88 and 11,971.16

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Solution

The fourth proportional to 21,402.52, 29,534.88 and 11,971.16 is: 16,519.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.52 : 29,534.88 = 11,971.16 : x
  2. Step 2: Convert to fraction form
    21,402.52/29,534.88 = 11,971.16/x
  3. Step 3: Cross multiply
    21,402.52x = 29,534.88 × 11,971.16
  4. Step 4: Simplify right side
    21,402.52x = 353,566,774.06
  5. Step 5: Solve for x
    x = 353,566,774.06/21,402.52
  6. Step 6: Final answer
    x = 16,519.87

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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.