Home / 13,416.29-18,513.55-7,447.49

Finding the Fourth Proportional to 13,416.29, 18,513.55 and 7,447.49

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Solution

The fourth proportional to 13,416.29, 18,513.55 and 7,447.49 is: 10,277.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.29 : 18,513.55 = 7,447.49 : x
  2. Step 2: Convert to fraction form
    13,416.29/18,513.55 = 7,447.49/x
  3. Step 3: Cross multiply
    13,416.29x = 18,513.55 × 7,447.49
  4. Step 4: Simplify right side
    13,416.29x = 137,879,478.49
  5. Step 5: Solve for x
    x = 137,879,478.49/13,416.29
  6. Step 6: Final answer
    x = 10,277.02

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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.