Home / 13,630.02-18,809.20-7,662.90

Finding the Fourth Proportional to 13,630.02, 18,809.20 and 7,662.90

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Solution

The fourth proportional to 13,630.02, 18,809.20 and 7,662.90 is: 10,574.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.02 : 18,809.20 = 7,662.90 : x
  2. Step 2: Convert to fraction form
    13,630.02/18,809.20 = 7,662.90/x
  3. Step 3: Cross multiply
    13,630.02x = 18,809.20 × 7,662.90
  4. Step 4: Simplify right side
    13,630.02x = 144,133,018.68
  5. Step 5: Solve for x
    x = 144,133,018.68/13,630.02
  6. Step 6: Final answer
    x = 10,574.67

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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.