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Finding the Fourth Proportional to 13,483.68, 18,607.77 and 7,515.90

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Solution

The fourth proportional to 13,483.68, 18,607.77 and 7,515.90 is: 10,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.68 : 18,607.77 = 7,515.90 : x
  2. Step 2: Convert to fraction form
    13,483.68/18,607.77 = 7,515.90/x
  3. Step 3: Cross multiply
    13,483.68x = 18,607.77 × 7,515.90
  4. Step 4: Simplify right side
    13,483.68x = 139,854,138.54
  5. Step 5: Solve for x
    x = 139,854,138.54/13,483.68
  6. Step 6: Final answer
    x = 10,372.10

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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.