Home / 13,416.17-18,513.38-7,447.37

Finding the Fourth Proportional to 13,416.17, 18,513.38 and 7,447.37

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Solution

The fourth proportional to 13,416.17, 18,513.38 and 7,447.37 is: 10,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.17 : 18,513.38 = 7,447.37 : x
  2. Step 2: Convert to fraction form
    13,416.17/18,513.38 = 7,447.37/x
  3. Step 3: Cross multiply
    13,416.17x = 18,513.38 × 7,447.37
  4. Step 4: Simplify right side
    13,416.17x = 137,875,861.01
  5. Step 5: Solve for x
    x = 137,875,861.01/13,416.17
  6. Step 6: Final answer
    x = 10,276.85

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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.