Home / 13,076.40-18,049.32-8,603.58

Finding the Fourth Proportional to 13,076.40, 18,049.32 and 8,603.58

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Solution

The fourth proportional to 13,076.40, 18,049.32 and 8,603.58 is: 11,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,076.40 : 18,049.32 = 8,603.58 : x
  2. Step 2: Convert to fraction form
    13,076.40/18,049.32 = 8,603.58/x
  3. Step 3: Cross multiply
    13,076.40x = 18,049.32 × 8,603.58
  4. Step 4: Simplify right side
    13,076.40x = 155,288,768.57
  5. Step 5: Solve for x
    x = 155,288,768.57/13,076.40
  6. Step 6: Final answer
    x = 11,875.50

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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.