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Finding the Fourth Proportional to 13,468.38, 18,585.99 and 7,499.76

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Solution

The fourth proportional to 13,468.38, 18,585.99 and 7,499.76 is: 10,349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,468.38 : 18,585.99 = 7,499.76 : x
  2. Step 2: Convert to fraction form
    13,468.38/18,585.99 = 7,499.76/x
  3. Step 3: Cross multiply
    13,468.38x = 18,585.99 × 7,499.76
  4. Step 4: Simplify right side
    13,468.38x = 139,390,464.36
  5. Step 5: Solve for x
    x = 139,390,464.36/13,468.38
  6. Step 6: Final answer
    x = 10,349.46

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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.