Home / 20,851.04-28,776.48-11,899.88

Finding the Fourth Proportional to 20,851.04, 28,776.48 and 11,899.88

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Solution

The fourth proportional to 20,851.04, 28,776.48 and 11,899.88 is: 16,423.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.04 : 28,776.48 = 11,899.88 : x
  2. Step 2: Convert to fraction form
    20,851.04/28,776.48 = 11,899.88/x
  3. Step 3: Cross multiply
    20,851.04x = 28,776.48 × 11,899.88
  4. Step 4: Simplify right side
    20,851.04x = 342,436,658.82
  5. Step 5: Solve for x
    x = 342,436,658.82/20,851.04
  6. Step 6: Final answer
    x = 16,423.00

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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.