Home / 13,407.30-18,502.16-7,439.09

Finding the Fourth Proportional to 13,407.30, 18,502.16 and 7,439.09

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Solution

The fourth proportional to 13,407.30, 18,502.16 and 7,439.09 is: 10,265.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.30 : 18,502.16 = 7,439.09 : x
  2. Step 2: Convert to fraction form
    13,407.30/18,502.16 = 7,439.09/x
  3. Step 3: Cross multiply
    13,407.30x = 18,502.16 × 7,439.09
  4. Step 4: Simplify right side
    13,407.30x = 137,639,103.73
  5. Step 5: Solve for x
    x = 137,639,103.73/13,407.30
  6. Step 6: Final answer
    x = 10,265.98

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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.