Home / 13,759.40-18,987.71-8,094.76

Finding the Fourth Proportional to 13,759.40, 18,987.71 and 8,094.76

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Solution

The fourth proportional to 13,759.40, 18,987.71 and 8,094.76 is: 11,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.40 : 18,987.71 = 8,094.76 : x
  2. Step 2: Convert to fraction form
    13,759.40/18,987.71 = 8,094.76/x
  3. Step 3: Cross multiply
    13,759.40x = 18,987.71 × 8,094.76
  4. Step 4: Simplify right side
    13,759.40x = 153,700,955.40
  5. Step 5: Solve for x
    x = 153,700,955.40/13,759.40
  6. Step 6: Final answer
    x = 11,170.61

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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.