Home / 13,408.36-18,502.18-7,439.08

Finding the Fourth Proportional to 13,408.36, 18,502.18 and 7,439.08

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Solution

The fourth proportional to 13,408.36, 18,502.18 and 7,439.08 is: 10,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.36 : 18,502.18 = 7,439.08 : x
  2. Step 2: Convert to fraction form
    13,408.36/18,502.18 = 7,439.08/x
  3. Step 3: Cross multiply
    13,408.36x = 18,502.18 × 7,439.08
  4. Step 4: Simplify right side
    13,408.36x = 137,639,197.19
  5. Step 5: Solve for x
    x = 137,639,197.19/13,408.36
  6. Step 6: Final answer
    x = 10,265.18

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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.