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Finding the Fourth Proportional to 13,154.14, 18,152.48 and 7,185.65

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Solution

The fourth proportional to 13,154.14, 18,152.48 and 7,185.65 is: 9,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.14 : 18,152.48 = 7,185.65 : x
  2. Step 2: Convert to fraction form
    13,154.14/18,152.48 = 7,185.65/x
  3. Step 3: Cross multiply
    13,154.14x = 18,152.48 × 7,185.65
  4. Step 4: Simplify right side
    13,154.14x = 130,437,331.98
  5. Step 5: Solve for x
    x = 130,437,331.98/13,154.14
  6. Step 6: Final answer
    x = 9,916.07

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Double scale
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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.