Home / 12,419.84-17,138.52-7,383.80

Finding the Fourth Proportional to 12,419.84, 17,138.52 and 7,383.80

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Solution

The fourth proportional to 12,419.84, 17,138.52 and 7,383.80 is: 10,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.84 : 17,138.52 = 7,383.80 : x
  2. Step 2: Convert to fraction form
    12,419.84/17,138.52 = 7,383.80/x
  3. Step 3: Cross multiply
    12,419.84x = 17,138.52 × 7,383.80
  4. Step 4: Simplify right side
    12,419.84x = 126,547,403.98
  5. Step 5: Solve for x
    x = 126,547,403.98/12,419.84
  6. Step 6: Final answer
    x = 10,189.13

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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.