Home / 13,407.05-18,502.79-7,439.88

Finding the Fourth Proportional to 13,407.05, 18,502.79 and 7,439.88

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Solution

The fourth proportional to 13,407.05, 18,502.79 and 7,439.88 is: 10,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.05 : 18,502.79 = 7,439.88 : x
  2. Step 2: Convert to fraction form
    13,407.05/18,502.79 = 7,439.88/x
  3. Step 3: Cross multiply
    13,407.05x = 18,502.79 × 7,439.88
  4. Step 4: Simplify right side
    13,407.05x = 137,658,537.27
  5. Step 5: Solve for x
    x = 137,658,537.27/13,407.05
  6. Step 6: Final answer
    x = 10,267.62

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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.