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Finding the Fourth Proportional to 18,980.93, 28,488.76 and 9,627.41

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Solution

The fourth proportional to 18,980.93, 28,488.76 and 9,627.41 is: 14,449.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.93 : 28,488.76 = 9,627.41 : x
  2. Step 2: Convert to fraction form
    18,980.93/28,488.76 = 9,627.41/x
  3. Step 3: Cross multiply
    18,980.93x = 28,488.76 × 9,627.41
  4. Step 4: Simplify right side
    18,980.93x = 274,272,972.91
  5. Step 5: Solve for x
    x = 274,272,972.91/18,980.93
  6. Step 6: Final answer
    x = 14,449.92

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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.