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Finding the Fourth Proportional to 18,810.38, 28,228.53 and 6,498.38

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Solution

The fourth proportional to 18,810.38, 28,228.53 and 6,498.38 is: 9,752.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.38 : 28,228.53 = 6,498.38 : x
  2. Step 2: Convert to fraction form
    18,810.38/28,228.53 = 6,498.38/x
  3. Step 3: Cross multiply
    18,810.38x = 28,228.53 × 6,498.38
  4. Step 4: Simplify right side
    18,810.38x = 183,439,714.78
  5. Step 5: Solve for x
    x = 183,439,714.78/18,810.38
  6. Step 6: Final answer
    x = 9,752.05

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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.