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Finding the Fourth Proportional to 13,171.68, 18,176.76 and 7,582.68

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Solution

The fourth proportional to 13,171.68, 18,176.76 and 7,582.68 is: 10,464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.68 : 18,176.76 = 7,582.68 : x
  2. Step 2: Convert to fraction form
    13,171.68/18,176.76 = 7,582.68/x
  3. Step 3: Cross multiply
    13,171.68x = 18,176.76 × 7,582.68
  4. Step 4: Simplify right side
    13,171.68x = 137,828,554.52
  5. Step 5: Solve for x
    x = 137,828,554.52/13,171.68
  6. Step 6: Final answer
    x = 10,464.01

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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.