Home / 21,319.36-29,412.98-12,361.92

Finding the Fourth Proportional to 21,319.36, 29,412.98 and 12,361.92

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Solution

The fourth proportional to 21,319.36, 29,412.98 and 12,361.92 is: 17,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.36 : 29,412.98 = 12,361.92 : x
  2. Step 2: Convert to fraction form
    21,319.36/29,412.98 = 12,361.92/x
  3. Step 3: Cross multiply
    21,319.36x = 29,412.98 × 12,361.92
  4. Step 4: Simplify right side
    21,319.36x = 363,600,905.72
  5. Step 5: Solve for x
    x = 363,600,905.72/21,319.36
  6. Step 6: Final answer
    x = 17,054.96

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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.