Home / 13,318.77-18,386.55-8,284.60

Finding the Fourth Proportional to 13,318.77, 18,386.55 and 8,284.60

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Solution

The fourth proportional to 13,318.77, 18,386.55 and 8,284.60 is: 11,436.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.77 : 18,386.55 = 8,284.60 : x
  2. Step 2: Convert to fraction form
    13,318.77/18,386.55 = 8,284.60/x
  3. Step 3: Cross multiply
    13,318.77x = 18,386.55 × 8,284.60
  4. Step 4: Simplify right side
    13,318.77x = 152,325,212.13
  5. Step 5: Solve for x
    x = 152,325,212.13/13,318.77
  6. Step 6: Final answer
    x = 11,436.88

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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.