Home / 18,869.10-28,287.45-16,900.80

Finding the Fourth Proportional to 18,869.10, 28,287.45 and 16,900.80

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Solution

The fourth proportional to 18,869.10, 28,287.45 and 16,900.80 is: 25,336.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.10 : 28,287.45 = 16,900.80 : x
  2. Step 2: Convert to fraction form
    18,869.10/28,287.45 = 16,900.80/x
  3. Step 3: Cross multiply
    18,869.10x = 28,287.45 × 16,900.80
  4. Step 4: Simplify right side
    18,869.10x = 478,080,534.96
  5. Step 5: Solve for x
    x = 478,080,534.96/18,869.10
  6. Step 6: Final answer
    x = 25,336.69

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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.