Home / 13,533.11-18,678.71-8,226.80

Finding the Fourth Proportional to 13,533.11, 18,678.71 and 8,226.80

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Solution

The fourth proportional to 13,533.11, 18,678.71 and 8,226.80 is: 11,354.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,533.11 : 18,678.71 = 8,226.80 : x
  2. Step 2: Convert to fraction form
    13,533.11/18,678.71 = 8,226.80/x
  3. Step 3: Cross multiply
    13,533.11x = 18,678.71 × 8,226.80
  4. Step 4: Simplify right side
    13,533.11x = 153,665,970.29
  5. Step 5: Solve for x
    x = 153,665,970.29/13,533.11
  6. Step 6: Final answer
    x = 11,354.82

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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.