Home / 11,719.40-16,172.84-7,242.12

Finding the Fourth Proportional to 11,719.40, 16,172.84 and 7,242.12

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Solution

The fourth proportional to 11,719.40, 16,172.84 and 7,242.12 is: 9,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.40 : 16,172.84 = 7,242.12 : x
  2. Step 2: Convert to fraction form
    11,719.40/16,172.84 = 7,242.12/x
  3. Step 3: Cross multiply
    11,719.40x = 16,172.84 × 7,242.12
  4. Step 4: Simplify right side
    11,719.40x = 117,125,648.02
  5. Step 5: Solve for x
    x = 117,125,648.02/11,719.40
  6. Step 6: Final answer
    x = 9,994.17

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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.