Home / 12,355.78-17,051.26-7,319.92

Finding the Fourth Proportional to 12,355.78, 17,051.26 and 7,319.92

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Solution

The fourth proportional to 12,355.78, 17,051.26 and 7,319.92 is: 10,101.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.78 : 17,051.26 = 7,319.92 : x
  2. Step 2: Convert to fraction form
    12,355.78/17,051.26 = 7,319.92/x
  3. Step 3: Cross multiply
    12,355.78x = 17,051.26 × 7,319.92
  4. Step 4: Simplify right side
    12,355.78x = 124,813,859.10
  5. Step 5: Solve for x
    x = 124,813,859.10/12,355.78
  6. Step 6: Final answer
    x = 10,101.66

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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.