Home / 13,455.18-18,568.66-7,486.72

Finding the Fourth Proportional to 13,455.18, 18,568.66 and 7,486.72

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Solution

The fourth proportional to 13,455.18, 18,568.66 and 7,486.72 is: 10,331.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.18 : 18,568.66 = 7,486.72 : x
  2. Step 2: Convert to fraction form
    13,455.18/18,568.66 = 7,486.72/x
  3. Step 3: Cross multiply
    13,455.18x = 18,568.66 × 7,486.72
  4. Step 4: Simplify right side
    13,455.18x = 139,018,249.40
  5. Step 5: Solve for x
    x = 139,018,249.40/13,455.18
  6. Step 6: Final answer
    x = 10,331.95

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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.