Home / 21,559.36-29,747.44-12,605.12

Finding the Fourth Proportional to 21,559.36, 29,747.44 and 12,605.12

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Solution

The fourth proportional to 21,559.36, 29,747.44 and 12,605.12 is: 17,392.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.36 : 29,747.44 = 12,605.12 : x
  2. Step 2: Convert to fraction form
    21,559.36/29,747.44 = 12,605.12/x
  3. Step 3: Cross multiply
    21,559.36x = 29,747.44 × 12,605.12
  4. Step 4: Simplify right side
    21,559.36x = 374,970,050.89
  5. Step 5: Solve for x
    x = 374,970,050.89/21,559.36
  6. Step 6: Final answer
    x = 17,392.45

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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.