Home / 13,066.40-18,033.08-8,287.80

Finding the Fourth Proportional to 13,066.40, 18,033.08 and 8,287.80

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Solution

The fourth proportional to 13,066.40, 18,033.08 and 8,287.80 is: 11,438.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,066.40 : 18,033.08 = 8,287.80 : x
  2. Step 2: Convert to fraction form
    13,066.40/18,033.08 = 8,287.80/x
  3. Step 3: Cross multiply
    13,066.40x = 18,033.08 × 8,287.80
  4. Step 4: Simplify right side
    13,066.40x = 149,454,518.99
  5. Step 5: Solve for x
    x = 149,454,518.99/13,066.40
  6. Step 6: Final answer
    x = 11,438.08

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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.