Home / 15,911.20-23,892.30-12,651.40

Finding the Fourth Proportional to 15,911.20, 23,892.30 and 12,651.40

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Solution

The fourth proportional to 15,911.20, 23,892.30 and 12,651.40 is: 18,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.20 : 23,892.30 = 12,651.40 : x
  2. Step 2: Convert to fraction form
    15,911.20/23,892.30 = 12,651.40/x
  3. Step 3: Cross multiply
    15,911.20x = 23,892.30 × 12,651.40
  4. Step 4: Simplify right side
    15,911.20x = 302,271,044.22
  5. Step 5: Solve for x
    x = 302,271,044.22/15,911.20
  6. Step 6: Final answer
    x = 18,997.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.