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Finding the Fourth Proportional to 18,130.66, 25,028.14 and 16,995.86

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Solution

The fourth proportional to 18,130.66, 25,028.14 and 16,995.86 is: 23,461.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.66 : 25,028.14 = 16,995.86 : x
  2. Step 2: Convert to fraction form
    18,130.66/25,028.14 = 16,995.86/x
  3. Step 3: Cross multiply
    18,130.66x = 25,028.14 × 16,995.86
  4. Step 4: Simplify right side
    18,130.66x = 425,374,763.50
  5. Step 5: Solve for x
    x = 425,374,763.50/18,130.66
  6. Step 6: Final answer
    x = 23,461.63

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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.