Home / 18,621.95-25,668.69-14,636.21

Finding the Fourth Proportional to 18,621.95, 25,668.69 and 14,636.21

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Solution

The fourth proportional to 18,621.95, 25,668.69 and 14,636.21 is: 20,174.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.95 : 25,668.69 = 14,636.21 : x
  2. Step 2: Convert to fraction form
    18,621.95/25,668.69 = 14,636.21/x
  3. Step 3: Cross multiply
    18,621.95x = 25,668.69 × 14,636.21
  4. Step 4: Simplify right side
    18,621.95x = 375,692,208.92
  5. Step 5: Solve for x
    x = 375,692,208.92/18,621.95
  6. Step 6: Final answer
    x = 20,174.70

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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.