Home / 21,080.14-29,077.32-13,518.52

Finding the Fourth Proportional to 21,080.14, 29,077.32 and 13,518.52

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Solution

The fourth proportional to 21,080.14, 29,077.32 and 13,518.52 is: 18,647.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.14 : 29,077.32 = 13,518.52 : x
  2. Step 2: Convert to fraction form
    21,080.14/29,077.32 = 13,518.52/x
  3. Step 3: Cross multiply
    21,080.14x = 29,077.32 × 13,518.52
  4. Step 4: Simplify right side
    21,080.14x = 393,082,331.97
  5. Step 5: Solve for x
    x = 393,082,331.97/21,080.14
  6. Step 6: Final answer
    x = 18,647.05

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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.