Home / 13,406.46-18,500.58-7,438.32

Finding the Fourth Proportional to 13,406.46, 18,500.58 and 7,438.32

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Solution

The fourth proportional to 13,406.46, 18,500.58 and 7,438.32 is: 10,264.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.46 : 18,500.58 = 7,438.32 : x
  2. Step 2: Convert to fraction form
    13,406.46/18,500.58 = 7,438.32/x
  3. Step 3: Cross multiply
    13,406.46x = 18,500.58 × 7,438.32
  4. Step 4: Simplify right side
    13,406.46x = 137,613,234.23
  5. Step 5: Solve for x
    x = 137,613,234.23/13,406.46
  6. Step 6: Final answer
    x = 10,264.70

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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.