Home / 13,416.84-18,512.55-7,447.68

Finding the Fourth Proportional to 13,416.84, 18,512.55 and 7,447.68

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Solution

The fourth proportional to 13,416.84, 18,512.55 and 7,447.68 is: 10,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.84 : 18,512.55 = 7,447.68 : x
  2. Step 2: Convert to fraction form
    13,416.84/18,512.55 = 7,447.68/x
  3. Step 3: Cross multiply
    13,416.84x = 18,512.55 × 7,447.68
  4. Step 4: Simplify right side
    13,416.84x = 137,875,548.38
  5. Step 5: Solve for x
    x = 137,875,548.38/13,416.84
  6. Step 6: Final answer
    x = 10,276.31

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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.