Home / 13,623.32-18,800.28-7,655

Finding the Fourth Proportional to 13,623.32, 18,800.28 and 7,655

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Solution

The fourth proportional to 13,623.32, 18,800.28 and 7,655 is: 10,563.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.32 : 18,800.28 = 7,655 : x
  2. Step 2: Convert to fraction form
    13,623.32/18,800.28 = 7,655/x
  3. Step 3: Cross multiply
    13,623.32x = 18,800.28 × 7,655
  4. Step 4: Simplify right side
    13,623.32x = 143,916,143.40
  5. Step 5: Solve for x
    x = 143,916,143.40/13,623.32
  6. Step 6: Final answer
    x = 10,563.96

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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.