Home / 13,376.81-18,463.07-8,900.75

Finding the Fourth Proportional to 13,376.81, 18,463.07 and 8,900.75

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Solution

The fourth proportional to 13,376.81, 18,463.07 and 8,900.75 is: 12,285.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.81 : 18,463.07 = 8,900.75 : x
  2. Step 2: Convert to fraction form
    13,376.81/18,463.07 = 8,900.75/x
  3. Step 3: Cross multiply
    13,376.81x = 18,463.07 × 8,900.75
  4. Step 4: Simplify right side
    13,376.81x = 164,335,170.30
  5. Step 5: Solve for x
    x = 164,335,170.30/13,376.81
  6. Step 6: Final answer
    x = 12,285.08

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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.