Home / 20,552.64-28,362.63-11,121.19

Finding the Fourth Proportional to 20,552.64, 28,362.63 and 11,121.19

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Solution

The fourth proportional to 20,552.64, 28,362.63 and 11,121.19 is: 15,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.64 : 28,362.63 = 11,121.19 : x
  2. Step 2: Convert to fraction form
    20,552.64/28,362.63 = 11,121.19/x
  3. Step 3: Cross multiply
    20,552.64x = 28,362.63 × 11,121.19
  4. Step 4: Simplify right side
    20,552.64x = 315,426,197.13
  5. Step 5: Solve for x
    x = 315,426,197.13/20,552.64
  6. Step 6: Final answer
    x = 15,347.24

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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.