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Finding the Fourth Proportional to 13,484, 18,607.32 and 7,515.92

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Solution

The fourth proportional to 13,484, 18,607.32 and 7,515.92 is: 10,371.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484 : 18,607.32 = 7,515.92 : x
  2. Step 2: Convert to fraction form
    13,484/18,607.32 = 7,515.92/x
  3. Step 3: Cross multiply
    13,484x = 18,607.32 × 7,515.92
  4. Step 4: Simplify right side
    13,484x = 139,851,128.53
  5. Step 5: Solve for x
    x = 139,851,128.53/13,484
  6. Step 6: Final answer
    x = 10,371.64

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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.