Home / 13,630.04-18,808.88-7,965.32

Finding the Fourth Proportional to 13,630.04, 18,808.88 and 7,965.32

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Solution

The fourth proportional to 13,630.04, 18,808.88 and 7,965.32 is: 10,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.04 : 18,808.88 = 7,965.32 : x
  2. Step 2: Convert to fraction form
    13,630.04/18,808.88 = 7,965.32/x
  3. Step 3: Cross multiply
    13,630.04x = 18,808.88 × 7,965.32
  4. Step 4: Simplify right side
    13,630.04x = 149,818,748.04
  5. Step 5: Solve for x
    x = 149,818,748.04/13,630.04
  6. Step 6: Final answer
    x = 10,991.81

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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.