Home / 12,618.32-17,408.34-7,312.14

Finding the Fourth Proportional to 12,618.32, 17,408.34 and 7,312.14

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Solution

The fourth proportional to 12,618.32, 17,408.34 and 7,312.14 is: 10,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.32 : 17,408.34 = 7,312.14 : x
  2. Step 2: Convert to fraction form
    12,618.32/17,408.34 = 7,312.14/x
  3. Step 3: Cross multiply
    12,618.32x = 17,408.34 × 7,312.14
  4. Step 4: Simplify right side
    12,618.32x = 127,292,219.25
  5. Step 5: Solve for x
    x = 127,292,219.25/12,618.32
  6. Step 6: Final answer
    x = 10,087.89

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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.