Home / 13,275.84-18,314.28-7,969.68

Finding the Fourth Proportional to 13,275.84, 18,314.28 and 7,969.68

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Solution

The fourth proportional to 13,275.84, 18,314.28 and 7,969.68 is: 10,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.84 : 18,314.28 = 7,969.68 : x
  2. Step 2: Convert to fraction form
    13,275.84/18,314.28 = 7,969.68/x
  3. Step 3: Cross multiply
    13,275.84x = 18,314.28 × 7,969.68
  4. Step 4: Simplify right side
    13,275.84x = 145,958,951.03
  5. Step 5: Solve for x
    x = 145,958,951.03/13,275.84
  6. Step 6: Final answer
    x = 10,994.33

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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.