Home / 21,913.47-30,241.13-13,299.75

Finding the Fourth Proportional to 21,913.47, 30,241.13 and 13,299.75

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Solution

The fourth proportional to 21,913.47, 30,241.13 and 13,299.75 is: 18,353.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.47 : 30,241.13 = 13,299.75 : x
  2. Step 2: Convert to fraction form
    21,913.47/30,241.13 = 13,299.75/x
  3. Step 3: Cross multiply
    21,913.47x = 30,241.13 × 13,299.75
  4. Step 4: Simplify right side
    21,913.47x = 402,199,402.22
  5. Step 5: Solve for x
    x = 402,199,402.22/21,913.47
  6. Step 6: Final answer
    x = 18,353.98

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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.