Home / 13,285.58-18,329.31-8,811.50

Finding the Fourth Proportional to 13,285.58, 18,329.31 and 8,811.50

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Solution

The fourth proportional to 13,285.58, 18,329.31 and 8,811.50 is: 12,156.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.58 : 18,329.31 = 8,811.50 : x
  2. Step 2: Convert to fraction form
    13,285.58/18,329.31 = 8,811.50/x
  3. Step 3: Cross multiply
    13,285.58x = 18,329.31 × 8,811.50
  4. Step 4: Simplify right side
    13,285.58x = 161,508,715.07
  5. Step 5: Solve for x
    x = 161,508,715.07/13,285.58
  6. Step 6: Final answer
    x = 12,156.69

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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.