Home / 15,405.16-21,249.34-10,100.32

Finding the Fourth Proportional to 15,405.16, 21,249.34 and 10,100.32

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Solution

The fourth proportional to 15,405.16, 21,249.34 and 10,100.32 is: 13,932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.16 : 21,249.34 = 10,100.32 : x
  2. Step 2: Convert to fraction form
    15,405.16/21,249.34 = 10,100.32/x
  3. Step 3: Cross multiply
    15,405.16x = 21,249.34 × 10,100.32
  4. Step 4: Simplify right side
    15,405.16x = 214,625,083.29
  5. Step 5: Solve for x
    x = 214,625,083.29/15,405.16
  6. Step 6: Final answer
    x = 13,932.03

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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.