Home / 13,311.35-18,368.80-7,343.06

Finding the Fourth Proportional to 13,311.35, 18,368.80 and 7,343.06

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Solution

The fourth proportional to 13,311.35, 18,368.80 and 7,343.06 is: 10,132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.35 : 18,368.80 = 7,343.06 : x
  2. Step 2: Convert to fraction form
    13,311.35/18,368.80 = 7,343.06/x
  3. Step 3: Cross multiply
    13,311.35x = 18,368.80 × 7,343.06
  4. Step 4: Simplify right side
    13,311.35x = 134,883,200.53
  5. Step 5: Solve for x
    x = 134,883,200.53/13,311.35
  6. Step 6: Final answer
    x = 10,132.95

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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.