Home / 13,750.48-18,961.32-8,160.40

Finding the Fourth Proportional to 13,750.48, 18,961.32 and 8,160.40

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Solution

The fourth proportional to 13,750.48, 18,961.32 and 8,160.40 is: 11,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.48 : 18,961.32 = 8,160.40 : x
  2. Step 2: Convert to fraction form
    13,750.48/18,961.32 = 8,160.40/x
  3. Step 3: Cross multiply
    13,750.48x = 18,961.32 × 8,160.40
  4. Step 4: Simplify right side
    13,750.48x = 154,731,955.73
  5. Step 5: Solve for x
    x = 154,731,955.73/13,750.48
  6. Step 6: Final answer
    x = 11,252.84

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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.