Home / 13,315.05-18,373.64-7,647.95

Finding the Fourth Proportional to 13,315.05, 18,373.64 and 7,647.95

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Solution

The fourth proportional to 13,315.05, 18,373.64 and 7,647.95 is: 10,553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.05 : 18,373.64 = 7,647.95 : x
  2. Step 2: Convert to fraction form
    13,315.05/18,373.64 = 7,647.95/x
  3. Step 3: Cross multiply
    13,315.05x = 18,373.64 × 7,647.95
  4. Step 4: Simplify right side
    13,315.05x = 140,520,687.73
  5. Step 5: Solve for x
    x = 140,520,687.73/13,315.05
  6. Step 6: Final answer
    x = 10,553.52

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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.