Home / 15,380.16-21,216.30-10,284.48

Finding the Fourth Proportional to 15,380.16, 21,216.30 and 10,284.48

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Solution

The fourth proportional to 15,380.16, 21,216.30 and 10,284.48 is: 14,187.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.16 : 21,216.30 = 10,284.48 : x
  2. Step 2: Convert to fraction form
    15,380.16/21,216.30 = 10,284.48/x
  3. Step 3: Cross multiply
    15,380.16x = 21,216.30 × 10,284.48
  4. Step 4: Simplify right side
    15,380.16x = 218,198,613.02
  5. Step 5: Solve for x
    x = 218,198,613.02/15,380.16
  6. Step 6: Final answer
    x = 14,187.02

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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.