Home / 20,403.77-28,159.79-11,454.14

Finding the Fourth Proportional to 20,403.77, 28,159.79 and 11,454.14

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Solution

The fourth proportional to 20,403.77, 28,159.79 and 11,454.14 is: 15,808.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.77 : 28,159.79 = 11,454.14 : x
  2. Step 2: Convert to fraction form
    20,403.77/28,159.79 = 11,454.14/x
  3. Step 3: Cross multiply
    20,403.77x = 28,159.79 × 11,454.14
  4. Step 4: Simplify right side
    20,403.77x = 322,546,190.16
  5. Step 5: Solve for x
    x = 322,546,190.16/20,403.77
  6. Step 6: Final answer
    x = 15,808.17

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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.