Home / 20,400.17-28,152.29-11,447.08

Finding the Fourth Proportional to 20,400.17, 28,152.29 and 11,447.08

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Solution

The fourth proportional to 20,400.17, 28,152.29 and 11,447.08 is: 15,797.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.17 : 28,152.29 = 11,447.08 : x
  2. Step 2: Convert to fraction form
    20,400.17/28,152.29 = 11,447.08/x
  3. Step 3: Cross multiply
    20,400.17x = 28,152.29 × 11,447.08
  4. Step 4: Simplify right side
    20,400.17x = 322,261,474.05
  5. Step 5: Solve for x
    x = 322,261,474.05/20,400.17
  6. Step 6: Final answer
    x = 15,797.00

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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.