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Finding the Fourth Proportional to 18,898.95, 28,340.24 and 5,748.29

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Solution

The fourth proportional to 18,898.95, 28,340.24 and 5,748.29 is: 8,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.95 : 28,340.24 = 5,748.29 : x
  2. Step 2: Convert to fraction form
    18,898.95/28,340.24 = 5,748.29/x
  3. Step 3: Cross multiply
    18,898.95x = 28,340.24 × 5,748.29
  4. Step 4: Simplify right side
    18,898.95x = 162,907,886.36
  5. Step 5: Solve for x
    x = 162,907,886.36/18,898.95
  6. Step 6: Final answer
    x = 8,619.94

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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.