Home / 13,079.11-18,051.79-7,772.90

Finding the Fourth Proportional to 13,079.11, 18,051.79 and 7,772.90

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Solution

The fourth proportional to 13,079.11, 18,051.79 and 7,772.90 is: 10,728.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.11 : 18,051.79 = 7,772.90 : x
  2. Step 2: Convert to fraction form
    13,079.11/18,051.79 = 7,772.90/x
  3. Step 3: Cross multiply
    13,079.11x = 18,051.79 × 7,772.90
  4. Step 4: Simplify right side
    13,079.11x = 140,314,758.49
  5. Step 5: Solve for x
    x = 140,314,758.49/13,079.11
  6. Step 6: Final answer
    x = 10,728.16

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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.