Home / 21,265.45-29,346.09-11,705.13

Finding the Fourth Proportional to 21,265.45, 29,346.09 and 11,705.13

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Solution

The fourth proportional to 21,265.45, 29,346.09 and 11,705.13 is: 16,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.45 : 29,346.09 = 11,705.13 : x
  2. Step 2: Convert to fraction form
    21,265.45/29,346.09 = 11,705.13/x
  3. Step 3: Cross multiply
    21,265.45x = 29,346.09 × 11,705.13
  4. Step 4: Simplify right side
    21,265.45x = 343,499,798.44
  5. Step 5: Solve for x
    x = 343,499,798.44/21,265.45
  6. Step 6: Final answer
    x = 16,152.95

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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.