Home / 21,265.36-29,344.62-11,705.20

Finding the Fourth Proportional to 21,265.36, 29,344.62 and 11,705.20

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Solution

The fourth proportional to 21,265.36, 29,344.62 and 11,705.20 is: 16,152.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.36 : 29,344.62 = 11,705.20 : x
  2. Step 2: Convert to fraction form
    21,265.36/29,344.62 = 11,705.20/x
  3. Step 3: Cross multiply
    21,265.36x = 29,344.62 × 11,705.20
  4. Step 4: Simplify right side
    21,265.36x = 343,484,646.02
  5. Step 5: Solve for x
    x = 343,484,646.02/21,265.36
  6. Step 6: Final answer
    x = 16,152.31

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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.