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Finding the Fourth Proportional to 13,325.64, 18,389 and 7,357.16

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Solution

The fourth proportional to 13,325.64, 18,389 and 7,357.16 is: 10,152.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.64 : 18,389 = 7,357.16 : x
  2. Step 2: Convert to fraction form
    13,325.64/18,389 = 7,357.16/x
  3. Step 3: Cross multiply
    13,325.64x = 18,389 × 7,357.16
  4. Step 4: Simplify right side
    13,325.64x = 135,290,815.24
  5. Step 5: Solve for x
    x = 135,290,815.24/13,325.64
  6. Step 6: Final answer
    x = 10,152.67

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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.