Home / 20,322.16-28,054.17-15,288.30

Finding the Fourth Proportional to 20,322.16, 28,054.17 and 15,288.30

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Solution

The fourth proportional to 20,322.16, 28,054.17 and 15,288.30 is: 21,105.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.16 : 28,054.17 = 15,288.30 : x
  2. Step 2: Convert to fraction form
    20,322.16/28,054.17 = 15,288.30/x
  3. Step 3: Cross multiply
    20,322.16x = 28,054.17 × 15,288.30
  4. Step 4: Simplify right side
    20,322.16x = 428,900,567.21
  5. Step 5: Solve for x
    x = 428,900,567.21/20,322.16
  6. Step 6: Final answer
    x = 21,105.07

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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.