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Finding the Fourth Proportional to 18,700.74, 28,040.58 and 6,214.08

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Solution

The fourth proportional to 18,700.74, 28,040.58 and 6,214.08 is: 9,317.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.74 : 28,040.58 = 6,214.08 : x
  2. Step 2: Convert to fraction form
    18,700.74/28,040.58 = 6,214.08/x
  3. Step 3: Cross multiply
    18,700.74x = 28,040.58 × 6,214.08
  4. Step 4: Simplify right side
    18,700.74x = 174,246,407.37
  5. Step 5: Solve for x
    x = 174,246,407.37/18,700.74
  6. Step 6: Final answer
    x = 9,317.62

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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.