Home / 18,031.68-24,858.63-15,540.30

Finding the Fourth Proportional to 18,031.68, 24,858.63 and 15,540.30

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Solution

The fourth proportional to 18,031.68, 24,858.63 and 15,540.30 is: 21,423.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.68 : 24,858.63 = 15,540.30 : x
  2. Step 2: Convert to fraction form
    18,031.68/24,858.63 = 15,540.30/x
  3. Step 3: Cross multiply
    18,031.68x = 24,858.63 × 15,540.30
  4. Step 4: Simplify right side
    18,031.68x = 386,310,567.79
  5. Step 5: Solve for x
    x = 386,310,567.79/18,031.68
  6. Step 6: Final answer
    x = 21,423.99

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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.