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Finding the Fourth Proportional to 13,585.92, 18,748.98 and 7,618.14

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Solution

The fourth proportional to 13,585.92, 18,748.98 and 7,618.14 is: 10,513.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.92 : 18,748.98 = 7,618.14 : x
  2. Step 2: Convert to fraction form
    13,585.92/18,748.98 = 7,618.14/x
  3. Step 3: Cross multiply
    13,585.92x = 18,748.98 × 7,618.14
  4. Step 4: Simplify right side
    13,585.92x = 142,832,354.50
  5. Step 5: Solve for x
    x = 142,832,354.50/13,585.92
  6. Step 6: Final answer
    x = 10,513.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.