Home / 18,620.45-25,666.63-14,634.71

Finding the Fourth Proportional to 18,620.45, 25,666.63 and 14,634.71

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Solution

The fourth proportional to 18,620.45, 25,666.63 and 14,634.71 is: 20,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.45 : 25,666.63 = 14,634.71 : x
  2. Step 2: Convert to fraction form
    18,620.45/25,666.63 = 14,634.71/x
  3. Step 3: Cross multiply
    18,620.45x = 25,666.63 × 14,634.71
  4. Step 4: Simplify right side
    18,620.45x = 375,623,521.81
  5. Step 5: Solve for x
    x = 375,623,521.81/18,620.45
  6. Step 6: Final answer
    x = 20,172.64

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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.