Home / 21,419.52-29,559.33-11,988.06

Finding the Fourth Proportional to 21,419.52, 29,559.33 and 11,988.06

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Solution

The fourth proportional to 21,419.52, 29,559.33 and 11,988.06 is: 16,543.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.52 : 29,559.33 = 11,988.06 : x
  2. Step 2: Convert to fraction form
    21,419.52/29,559.33 = 11,988.06/x
  3. Step 3: Cross multiply
    21,419.52x = 29,559.33 × 11,988.06
  4. Step 4: Simplify right side
    21,419.52x = 354,359,021.60
  5. Step 5: Solve for x
    x = 354,359,021.60/21,419.52
  6. Step 6: Final answer
    x = 16,543.74

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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.