Home / 18,668.02-28,006.12-13,722.66

Finding the Fourth Proportional to 18,668.02, 28,006.12 and 13,722.66

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Solution

The fourth proportional to 18,668.02, 28,006.12 and 13,722.66 is: 20,587.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.02 : 28,006.12 = 13,722.66 : x
  2. Step 2: Convert to fraction form
    18,668.02/28,006.12 = 13,722.66/x
  3. Step 3: Cross multiply
    18,668.02x = 28,006.12 × 13,722.66
  4. Step 4: Simplify right side
    18,668.02x = 384,318,462.68
  5. Step 5: Solve for x
    x = 384,318,462.68/18,668.02
  6. Step 6: Final answer
    x = 20,587.00

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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.